Merge pull request #1086 from infosiftr/2xalpine

Add support for multiple (up to two) concurrent Alpine versions

11/alpine3.17/Dockerfile

@@ -0,0 +1,204 @@
+#
+# NOTE: THIS DOCKERFILE IS GENERATED VIA "apply-templates.sh"
+#
+# PLEASE DO NOT EDIT IT DIRECTLY.
+#
+
+FROM alpine:3.17
+
+# 70 is the standard uid/gid for "postgres" in Alpine
+# https://git.alpinelinux.org/aports/tree/main/postgresql/postgresql.pre-install?h=3.12-stable
+RUN set -eux; \
+	addgroup -g 70 -S postgres; \
+	adduser -u 70 -S -D -G postgres -H -h /var/lib/postgresql -s /bin/sh postgres; \
+	mkdir -p /var/lib/postgresql; \
+	chown -R postgres:postgres /var/lib/postgresql
+
+# su-exec (gosu-compatible) is installed further down
+
+# make the "en_US.UTF-8" locale so postgres will be utf-8 enabled by default
+# alpine doesn't require explicit locale-file generation
+ENV LANG en_US.utf8
+
+RUN mkdir /docker-entrypoint-initdb.d
+
+ENV PG_MAJOR 11
+ENV PG_VERSION 11.20
+ENV PG_SHA256 3d7c8882f64a7e98534a044257dfee7abad77a5b7da12508d85d722b98b5acce
+
+ENV DOCKER_PG_LLVM_DEPS \
+		llvm15-dev \
+		clang15
+
+RUN set -eux; \
+	\
+	wget -O postgresql.tar.bz2 "https://ftp.postgresql.org/pub/source/v$PG_VERSION/postgresql-$PG_VERSION.tar.bz2"; \
+	echo "$PG_SHA256 *postgresql.tar.bz2" | sha256sum -c -; \
+	mkdir -p /usr/src/postgresql; \
+	tar \
+		--extract \
+		--file postgresql.tar.bz2 \
+		--directory /usr/src/postgresql \
+		--strip-components 1 \
+	; \
+	rm postgresql.tar.bz2; \
+	\
+	apk add --no-cache --virtual .build-deps \
+		$DOCKER_PG_LLVM_DEPS \
+		bison \
+		coreutils \
+		dpkg-dev dpkg \
+		flex \
+		g++ \
+		gcc \
+		krb5-dev \
+		libc-dev \
+		libedit-dev \
+		libxml2-dev \
+		libxslt-dev \
+		linux-headers \
+		make \
+		openldap-dev \
+		openssl-dev \
+		perl-dev \
+		perl-ipc-run \
+		perl-utils \
+		python3-dev \
+		tcl-dev \
+		util-linux-dev \
+		zlib-dev \
+# https://www.postgresql.org/docs/10/static/release-10.html#id-1.11.6.9.5.13
+		icu-dev \
+	; \
+	\
+	cd /usr/src/postgresql; \
+# update "DEFAULT_PGSOCKET_DIR" to "/var/run/postgresql" (matching Debian)
+# see https://anonscm.debian.org/git/pkg-postgresql/postgresql.git/tree/debian/patches/51-default-sockets-in-var.patch?id=8b539fcb3e093a521c095e70bdfa76887217b89f
+	awk '$1 == "#define" && $2 == "DEFAULT_PGSOCKET_DIR" && $3 == "\"/tmp\"" { $3 = "\"/var/run/postgresql\""; print; next } { print }' src/include/pg_config_manual.h > src/include/pg_config_manual.h.new; \
+	grep '/var/run/postgresql' src/include/pg_config_manual.h.new; \
+	mv src/include/pg_config_manual.h.new src/include/pg_config_manual.h; \
+	gnuArch="$(dpkg-architecture --query DEB_BUILD_GNU_TYPE)"; \
+# explicitly update autoconf config.guess and config.sub so they support more arches/libcs
+	wget -O config/config.guess 'https://git.savannah.gnu.org/cgit/config.git/plain/config.guess?id=7d3d27baf8107b630586c962c057e22149653deb'; \
+	wget -O config/config.sub 'https://git.savannah.gnu.org/cgit/config.git/plain/config.sub?id=7d3d27baf8107b630586c962c057e22149653deb'; \
+	\
+# https://git.alpinelinux.org/aports/tree/community/postgresql12/APKBUILD?h=3.18-stable&id=a470294e6d6ca7059e41c54769b7c3c26ec901d4#n158
+	export LLVM_CONFIG="/usr/lib/llvm15/bin/llvm-config"; \
+# https://git.alpinelinux.org/aports/tree/community/postgresql12/APKBUILD?h=3.18-stable&id=a470294e6d6ca7059e41c54769b7c3c26ec901d4#n163
+	export CLANG=clang-15; \
+	\
+# configure options taken from:
+# https://anonscm.debian.org/cgit/pkg-postgresql/postgresql.git/tree/debian/rules?h=9.5
+	./configure \
+		--enable-option-checking=fatal \
+		--build="$gnuArch" \
+# "/usr/src/postgresql/src/backend/access/common/tupconvert.c:105: undefined reference to `libintl_gettext'"
+#		--enable-nls \
+		--enable-integer-datetimes \
+		--enable-thread-safety \
+		--enable-tap-tests \
+# skip debugging info -- we want tiny size instead
+#		--enable-debug \
+		--disable-rpath \
+		--with-uuid=e2fs \
+		--with-gnu-ld \
+		--with-pgport=5432 \
+		--with-system-tzdata=/usr/share/zoneinfo \
+		--prefix=/usr/local \
+		--with-includes=/usr/local/include \
+		--with-libraries=/usr/local/lib \
+		--with-gssapi \
+		--with-ldap \
+		--with-tcl \
+		--with-perl \
+		--with-python \
+#		--with-pam \
+		--with-openssl \
+		--with-libxml \
+		--with-libxslt \
+		--with-icu \
+		--with-llvm \
+	; \
+	make -j "$(nproc)" world; \
+	make install-world; \
+	make -C contrib install; \
+	\
+	runDeps="$( \
+		scanelf --needed --nobanner --format '%n#p' --recursive /usr/local \
+			| tr ',' '\n' \
+			| sort -u \
+			| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
+# Remove plperl, plpython and pltcl dependencies by default to save image size
+# To use the pl extensions, those have to be installed in a derived image
+			| grep -v -e perl -e python -e tcl \
+	)"; \
+	apk add --no-cache --virtual .postgresql-rundeps \
+		$runDeps \
+		bash \
+		su-exec \
+		tzdata \
+		zstd \
+# https://wiki.alpinelinux.org/wiki/Release_Notes_for_Alpine_3.16.0#ICU_data_split
+		icu-data-full \
+# nss_wrapper is not availble on ppc64le: "test case segfaults in ppc64le"
+# https://git.alpinelinux.org/aports/commit/testing/nss_wrapper/APKBUILD?h=3.17-stable&id=94d81ceeb58cff448d489bbcbe9a6d40c9991663
+		$([ "$(apk --print-arch)" != 'ppc64le' ] && echo 'nss_wrapper') \
+	; \
+	apk del --no-network .build-deps; \
+	cd /; \
+	rm -rf \
+		/usr/src/postgresql \
+		/usr/local/share/doc \
+		/usr/local/share/man \
+	; \
+	\
+	postgres --version
+
+# make the sample config easier to munge (and "correct by default")
+RUN set -eux; \
+	cp -v /usr/local/share/postgresql/postgresql.conf.sample /usr/local/share/postgresql/postgresql.conf.sample.orig; \
+	sed -ri "s!^#?(listen_addresses)\s*=\s*\S+.*!\1 = '*'!" /usr/local/share/postgresql/postgresql.conf.sample; \
+	grep -F "listen_addresses = '*'" /usr/local/share/postgresql/postgresql.conf.sample
+
+RUN mkdir -p /var/run/postgresql && chown -R postgres:postgres /var/run/postgresql && chmod 3777 /var/run/postgresql
+
+ENV PGDATA /var/lib/postgresql/data
+# this 777 will be replaced by 700 at runtime (allows semi-arbitrary "--user" values)
+RUN mkdir -p "$PGDATA" && chown -R postgres:postgres "$PGDATA" && chmod 1777 "$PGDATA"
+VOLUME /var/lib/postgresql/data
+
+COPY docker-entrypoint.sh /usr/local/bin/
+ENTRYPOINT ["docker-entrypoint.sh"]
+
+# We set the default STOPSIGNAL to SIGINT, which corresponds to what PostgreSQL
+# calls "Fast Shutdown mode" wherein new connections are disallowed and any
+# in-progress transactions are aborted, allowing PostgreSQL to stop cleanly and
+# flush tables to disk, which is the best compromise available to avoid data
+# corruption.
+#
+# Users who know their applications do not keep open long-lived idle connections
+# may way to use a value of SIGTERM instead, which corresponds to "Smart
+# Shutdown mode" in which any existing sessions are allowed to finish and the
+# server stops when all sessions are terminated.
+#
+# See https://www.postgresql.org/docs/12/server-shutdown.html for more details
+# about available PostgreSQL server shutdown signals.
+#
+# See also https://www.postgresql.org/docs/12/server-start.html for further
+# justification of this as the default value, namely that the example (and
+# shipped) systemd service files use the "Fast Shutdown mode" for service
+# termination.
+#
+STOPSIGNAL SIGINT
+#
+# An additional setting that is recommended for all users regardless of this
+# value is the runtime "--stop-timeout" (or your orchestrator/runtime's
+# equivalent) for controlling how long to wait between sending the defined
+# STOPSIGNAL and sending SIGKILL (which is likely to cause data corruption).
+#
+# The default in most runtimes (such as Docker) is 10 seconds, and the
+# documentation at https://www.postgresql.org/docs/12/server-start.html notes
+# that even 90 seconds may not be long enough in many instances.
+
+EXPOSE 5432
+CMD ["postgres"]

12/alpine3.17/Dockerfile

@@ -0,0 +1,204 @@
+#
+# NOTE: THIS DOCKERFILE IS GENERATED VIA "apply-templates.sh"
+#
+# PLEASE DO NOT EDIT IT DIRECTLY.
+#
+
+FROM alpine:3.17
+
+# 70 is the standard uid/gid for "postgres" in Alpine
+# https://git.alpinelinux.org/aports/tree/main/postgresql/postgresql.pre-install?h=3.12-stable
+RUN set -eux; \
+	addgroup -g 70 -S postgres; \
+	adduser -u 70 -S -D -G postgres -H -h /var/lib/postgresql -s /bin/sh postgres; \
+	mkdir -p /var/lib/postgresql; \
+	chown -R postgres:postgres /var/lib/postgresql
+
+# su-exec (gosu-compatible) is installed further down
+
+# make the "en_US.UTF-8" locale so postgres will be utf-8 enabled by default
+# alpine doesn't require explicit locale-file generation
+ENV LANG en_US.utf8
+
+RUN mkdir /docker-entrypoint-initdb.d
+
+ENV PG_MAJOR 12
+ENV PG_VERSION 12.15
+ENV PG_SHA256 bb5206e2864c1c4579938b96ea6096d155f22abf2d2cc2aa57571e3c4cb12b36
+
+ENV DOCKER_PG_LLVM_DEPS \
+		llvm15-dev \
+		clang15
+
+RUN set -eux; \
+	\
+	wget -O postgresql.tar.bz2 "https://ftp.postgresql.org/pub/source/v$PG_VERSION/postgresql-$PG_VERSION.tar.bz2"; \
+	echo "$PG_SHA256 *postgresql.tar.bz2" | sha256sum -c -; \
+	mkdir -p /usr/src/postgresql; \
+	tar \
+		--extract \
+		--file postgresql.tar.bz2 \
+		--directory /usr/src/postgresql \
+		--strip-components 1 \
+	; \
+	rm postgresql.tar.bz2; \
+	\
+	apk add --no-cache --virtual .build-deps \
+		$DOCKER_PG_LLVM_DEPS \
+		bison \
+		coreutils \
+		dpkg-dev dpkg \
+		flex \
+		g++ \
+		gcc \
+		krb5-dev \
+		libc-dev \
+		libedit-dev \
+		libxml2-dev \
+		libxslt-dev \
+		linux-headers \
+		make \
+		openldap-dev \
+		openssl-dev \
+		perl-dev \
+		perl-ipc-run \
+		perl-utils \
+		python3-dev \
+		tcl-dev \
+		util-linux-dev \
+		zlib-dev \
+# https://www.postgresql.org/docs/10/static/release-10.html#id-1.11.6.9.5.13
+		icu-dev \
+	; \
+	\
+	cd /usr/src/postgresql; \
+# update "DEFAULT_PGSOCKET_DIR" to "/var/run/postgresql" (matching Debian)
+# see https://anonscm.debian.org/git/pkg-postgresql/postgresql.git/tree/debian/patches/51-default-sockets-in-var.patch?id=8b539fcb3e093a521c095e70bdfa76887217b89f
+	awk '$1 == "#define" && $2 == "DEFAULT_PGSOCKET_DIR" && $3 == "\"/tmp\"" { $3 = "\"/var/run/postgresql\""; print; next } { print }' src/include/pg_config_manual.h > src/include/pg_config_manual.h.new; \
+	grep '/var/run/postgresql' src/include/pg_config_manual.h.new; \
+	mv src/include/pg_config_manual.h.new src/include/pg_config_manual.h; \
+	gnuArch="$(dpkg-architecture --query DEB_BUILD_GNU_TYPE)"; \
+# explicitly update autoconf config.guess and config.sub so they support more arches/libcs
+	wget -O config/config.guess 'https://git.savannah.gnu.org/cgit/config.git/plain/config.guess?id=7d3d27baf8107b630586c962c057e22149653deb'; \
+	wget -O config/config.sub 'https://git.savannah.gnu.org/cgit/config.git/plain/config.sub?id=7d3d27baf8107b630586c962c057e22149653deb'; \
+	\
+# https://git.alpinelinux.org/aports/tree/community/postgresql12/APKBUILD?h=3.18-stable&id=a470294e6d6ca7059e41c54769b7c3c26ec901d4#n158
+	export LLVM_CONFIG="/usr/lib/llvm15/bin/llvm-config"; \
+# https://git.alpinelinux.org/aports/tree/community/postgresql12/APKBUILD?h=3.18-stable&id=a470294e6d6ca7059e41c54769b7c3c26ec901d4#n163
+	export CLANG=clang-15; \
+	\
+# configure options taken from:
+# https://anonscm.debian.org/cgit/pkg-postgresql/postgresql.git/tree/debian/rules?h=9.5
+	./configure \
+		--enable-option-checking=fatal \
+		--build="$gnuArch" \
+# "/usr/src/postgresql/src/backend/access/common/tupconvert.c:105: undefined reference to `libintl_gettext'"
+#		--enable-nls \
+		--enable-integer-datetimes \
+		--enable-thread-safety \
+		--enable-tap-tests \
+# skip debugging info -- we want tiny size instead
+#		--enable-debug \
+		--disable-rpath \
+		--with-uuid=e2fs \
+		--with-gnu-ld \
+		--with-pgport=5432 \
+		--with-system-tzdata=/usr/share/zoneinfo \
+		--prefix=/usr/local \
+		--with-includes=/usr/local/include \
+		--with-libraries=/usr/local/lib \
+		--with-gssapi \
+		--with-ldap \
+		--with-tcl \
+		--with-perl \
+		--with-python \
+#		--with-pam \
+		--with-openssl \
+		--with-libxml \
+		--with-libxslt \
+		--with-icu \
+		--with-llvm \
+	; \
+	make -j "$(nproc)" world; \
+	make install-world; \
+	make -C contrib install; \
+	\
+	runDeps="$( \
+		scanelf --needed --nobanner --format '%n#p' --recursive /usr/local \
+			| tr ',' '\n' \
+			| sort -u \
+			| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
+# Remove plperl, plpython and pltcl dependencies by default to save image size
+# To use the pl extensions, those have to be installed in a derived image
+			| grep -v -e perl -e python -e tcl \
+	)"; \
+	apk add --no-cache --virtual .postgresql-rundeps \
+		$runDeps \
+		bash \
+		su-exec \
+		tzdata \
+		zstd \
+# https://wiki.alpinelinux.org/wiki/Release_Notes_for_Alpine_3.16.0#ICU_data_split
+		icu-data-full \
+# nss_wrapper is not availble on ppc64le: "test case segfaults in ppc64le"
+# https://git.alpinelinux.org/aports/commit/testing/nss_wrapper/APKBUILD?h=3.17-stable&id=94d81ceeb58cff448d489bbcbe9a6d40c9991663
+		$([ "$(apk --print-arch)" != 'ppc64le' ] && echo 'nss_wrapper') \
+	; \
+	apk del --no-network .build-deps; \
+	cd /; \
+	rm -rf \
+		/usr/src/postgresql \
+		/usr/local/share/doc \
+		/usr/local/share/man \
+	; \
+	\
+	postgres --version
+
+# make the sample config easier to munge (and "correct by default")
+RUN set -eux; \
+	cp -v /usr/local/share/postgresql/postgresql.conf.sample /usr/local/share/postgresql/postgresql.conf.sample.orig; \
+	sed -ri "s!^#?(listen_addresses)\s*=\s*\S+.*!\1 = '*'!" /usr/local/share/postgresql/postgresql.conf.sample; \
+	grep -F "listen_addresses = '*'" /usr/local/share/postgresql/postgresql.conf.sample
+
+RUN mkdir -p /var/run/postgresql && chown -R postgres:postgres /var/run/postgresql && chmod 3777 /var/run/postgresql
+
+ENV PGDATA /var/lib/postgresql/data
+# this 777 will be replaced by 700 at runtime (allows semi-arbitrary "--user" values)
+RUN mkdir -p "$PGDATA" && chown -R postgres:postgres "$PGDATA" && chmod 1777 "$PGDATA"
+VOLUME /var/lib/postgresql/data
+
+COPY docker-entrypoint.sh /usr/local/bin/
+ENTRYPOINT ["docker-entrypoint.sh"]
+
+# We set the default STOPSIGNAL to SIGINT, which corresponds to what PostgreSQL
+# calls "Fast Shutdown mode" wherein new connections are disallowed and any
+# in-progress transactions are aborted, allowing PostgreSQL to stop cleanly and
+# flush tables to disk, which is the best compromise available to avoid data
+# corruption.
+#
+# Users who know their applications do not keep open long-lived idle connections
+# may way to use a value of SIGTERM instead, which corresponds to "Smart
+# Shutdown mode" in which any existing sessions are allowed to finish and the
+# server stops when all sessions are terminated.
+#
+# See https://www.postgresql.org/docs/12/server-shutdown.html for more details
+# about available PostgreSQL server shutdown signals.
+#
+# See also https://www.postgresql.org/docs/12/server-start.html for further
+# justification of this as the default value, namely that the example (and
+# shipped) systemd service files use the "Fast Shutdown mode" for service
+# termination.
+#
+STOPSIGNAL SIGINT
+#
+# An additional setting that is recommended for all users regardless of this
+# value is the runtime "--stop-timeout" (or your orchestrator/runtime's
+# equivalent) for controlling how long to wait between sending the defined
+# STOPSIGNAL and sending SIGKILL (which is likely to cause data corruption).
+#
+# The default in most runtimes (such as Docker) is 10 seconds, and the
+# documentation at https://www.postgresql.org/docs/12/server-start.html notes
+# that even 90 seconds may not be long enough in many instances.
+
+EXPOSE 5432
+CMD ["postgres"]

13/alpine3.17/Dockerfile

@@ -0,0 +1,204 @@
+#
+# NOTE: THIS DOCKERFILE IS GENERATED VIA "apply-templates.sh"
+#
+# PLEASE DO NOT EDIT IT DIRECTLY.
+#
+
+FROM alpine:3.17
+
+# 70 is the standard uid/gid for "postgres" in Alpine
+# https://git.alpinelinux.org/aports/tree/main/postgresql/postgresql.pre-install?h=3.12-stable
+RUN set -eux; \
+	addgroup -g 70 -S postgres; \
+	adduser -u 70 -S -D -G postgres -H -h /var/lib/postgresql -s /bin/sh postgres; \
+	mkdir -p /var/lib/postgresql; \
+	chown -R postgres:postgres /var/lib/postgresql
+
+# su-exec (gosu-compatible) is installed further down
+
+# make the "en_US.UTF-8" locale so postgres will be utf-8 enabled by default
+# alpine doesn't require explicit locale-file generation
+ENV LANG en_US.utf8
+
+RUN mkdir /docker-entrypoint-initdb.d
+
+ENV PG_MAJOR 13
+ENV PG_VERSION 13.11
+ENV PG_SHA256 4992ff647203566b670d4e54dc5317499a26856c93576d0ea951bdf6bee50bfb
+
+ENV DOCKER_PG_LLVM_DEPS \
+		llvm15-dev \
+		clang15
+
+RUN set -eux; \
+	\
+	wget -O postgresql.tar.bz2 "https://ftp.postgresql.org/pub/source/v$PG_VERSION/postgresql-$PG_VERSION.tar.bz2"; \
+	echo "$PG_SHA256 *postgresql.tar.bz2" | sha256sum -c -; \
+	mkdir -p /usr/src/postgresql; \
+	tar \
+		--extract \
+		--file postgresql.tar.bz2 \
+		--directory /usr/src/postgresql \
+		--strip-components 1 \
+	; \
+	rm postgresql.tar.bz2; \
+	\
+	apk add --no-cache --virtual .build-deps \
+		$DOCKER_PG_LLVM_DEPS \
+		bison \
+		coreutils \
+		dpkg-dev dpkg \
+		flex \
+		g++ \
+		gcc \
+		krb5-dev \
+		libc-dev \
+		libedit-dev \
+		libxml2-dev \
+		libxslt-dev \
+		linux-headers \
+		make \
+		openldap-dev \
+		openssl-dev \
+		perl-dev \
+		perl-ipc-run \
+		perl-utils \
+		python3-dev \
+		tcl-dev \
+		util-linux-dev \
+		zlib-dev \
+# https://www.postgresql.org/docs/10/static/release-10.html#id-1.11.6.9.5.13
+		icu-dev \
+	; \
+	\
+	cd /usr/src/postgresql; \
+# update "DEFAULT_PGSOCKET_DIR" to "/var/run/postgresql" (matching Debian)
+# see https://anonscm.debian.org/git/pkg-postgresql/postgresql.git/tree/debian/patches/51-default-sockets-in-var.patch?id=8b539fcb3e093a521c095e70bdfa76887217b89f
+	awk '$1 == "#define" && $2 == "DEFAULT_PGSOCKET_DIR" && $3 == "\"/tmp\"" { $3 = "\"/var/run/postgresql\""; print; next } { print }' src/include/pg_config_manual.h > src/include/pg_config_manual.h.new; \
+	grep '/var/run/postgresql' src/include/pg_config_manual.h.new; \
+	mv src/include/pg_config_manual.h.new src/include/pg_config_manual.h; \
+	gnuArch="$(dpkg-architecture --query DEB_BUILD_GNU_TYPE)"; \
+# explicitly update autoconf config.guess and config.sub so they support more arches/libcs
+	wget -O config/config.guess 'https://git.savannah.gnu.org/cgit/config.git/plain/config.guess?id=7d3d27baf8107b630586c962c057e22149653deb'; \
+	wget -O config/config.sub 'https://git.savannah.gnu.org/cgit/config.git/plain/config.sub?id=7d3d27baf8107b630586c962c057e22149653deb'; \
+	\
+# https://git.alpinelinux.org/aports/tree/community/postgresql12/APKBUILD?h=3.18-stable&id=a470294e6d6ca7059e41c54769b7c3c26ec901d4#n158
+	export LLVM_CONFIG="/usr/lib/llvm15/bin/llvm-config"; \
+# https://git.alpinelinux.org/aports/tree/community/postgresql12/APKBUILD?h=3.18-stable&id=a470294e6d6ca7059e41c54769b7c3c26ec901d4#n163
+	export CLANG=clang-15; \
+	\
+# configure options taken from:
+# https://anonscm.debian.org/cgit/pkg-postgresql/postgresql.git/tree/debian/rules?h=9.5
+	./configure \
+		--enable-option-checking=fatal \
+		--build="$gnuArch" \
+# "/usr/src/postgresql/src/backend/access/common/tupconvert.c:105: undefined reference to `libintl_gettext'"
+#		--enable-nls \
+		--enable-integer-datetimes \
+		--enable-thread-safety \
+		--enable-tap-tests \
+# skip debugging info -- we want tiny size instead
+#		--enable-debug \
+		--disable-rpath \
+		--with-uuid=e2fs \
+		--with-gnu-ld \
+		--with-pgport=5432 \
+		--with-system-tzdata=/usr/share/zoneinfo \
+		--prefix=/usr/local \
+		--with-includes=/usr/local/include \
+		--with-libraries=/usr/local/lib \
+		--with-gssapi \
+		--with-ldap \
+		--with-tcl \
+		--with-perl \
+		--with-python \
+#		--with-pam \
+		--with-openssl \
+		--with-libxml \
+		--with-libxslt \
+		--with-icu \
+		--with-llvm \
+	; \
+	make -j "$(nproc)" world; \
+	make install-world; \
+	make -C contrib install; \
+	\
+	runDeps="$( \
+		scanelf --needed --nobanner --format '%n#p' --recursive /usr/local \
+			| tr ',' '\n' \
+			| sort -u \
+			| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
+# Remove plperl, plpython and pltcl dependencies by default to save image size
+# To use the pl extensions, those have to be installed in a derived image
+			| grep -v -e perl -e python -e tcl \
+	)"; \
+	apk add --no-cache --virtual .postgresql-rundeps \
+		$runDeps \
+		bash \
+		su-exec \
+		tzdata \
+		zstd \
+# https://wiki.alpinelinux.org/wiki/Release_Notes_for_Alpine_3.16.0#ICU_data_split
+		icu-data-full \
+# nss_wrapper is not availble on ppc64le: "test case segfaults in ppc64le"
+# https://git.alpinelinux.org/aports/commit/testing/nss_wrapper/APKBUILD?h=3.17-stable&id=94d81ceeb58cff448d489bbcbe9a6d40c9991663
+		$([ "$(apk --print-arch)" != 'ppc64le' ] && echo 'nss_wrapper') \
+	; \
+	apk del --no-network .build-deps; \
+	cd /; \
+	rm -rf \
+		/usr/src/postgresql \
+		/usr/local/share/doc \
+		/usr/local/share/man \
+	; \
+	\
+	postgres --version
+
+# make the sample config easier to munge (and "correct by default")
+RUN set -eux; \
+	cp -v /usr/local/share/postgresql/postgresql.conf.sample /usr/local/share/postgresql/postgresql.conf.sample.orig; \
+	sed -ri "s!^#?(listen_addresses)\s*=\s*\S+.*!\1 = '*'!" /usr/local/share/postgresql/postgresql.conf.sample; \
+	grep -F "listen_addresses = '*'" /usr/local/share/postgresql/postgresql.conf.sample
+
+RUN mkdir -p /var/run/postgresql && chown -R postgres:postgres /var/run/postgresql && chmod 3777 /var/run/postgresql
+
+ENV PGDATA /var/lib/postgresql/data
+# this 777 will be replaced by 700 at runtime (allows semi-arbitrary "--user" values)
+RUN mkdir -p "$PGDATA" && chown -R postgres:postgres "$PGDATA" && chmod 1777 "$PGDATA"
+VOLUME /var/lib/postgresql/data
+
+COPY docker-entrypoint.sh /usr/local/bin/
+ENTRYPOINT ["docker-entrypoint.sh"]
+
+# We set the default STOPSIGNAL to SIGINT, which corresponds to what PostgreSQL
+# calls "Fast Shutdown mode" wherein new connections are disallowed and any
+# in-progress transactions are aborted, allowing PostgreSQL to stop cleanly and
+# flush tables to disk, which is the best compromise available to avoid data
+# corruption.
+#
+# Users who know their applications do not keep open long-lived idle connections
+# may way to use a value of SIGTERM instead, which corresponds to "Smart
+# Shutdown mode" in which any existing sessions are allowed to finish and the
+# server stops when all sessions are terminated.
+#
+# See https://www.postgresql.org/docs/12/server-shutdown.html for more details
+# about available PostgreSQL server shutdown signals.
+#
+# See also https://www.postgresql.org/docs/12/server-start.html for further
+# justification of this as the default value, namely that the example (and
+# shipped) systemd service files use the "Fast Shutdown mode" for service
+# termination.
+#
+STOPSIGNAL SIGINT
+#
+# An additional setting that is recommended for all users regardless of this
+# value is the runtime "--stop-timeout" (or your orchestrator/runtime's
+# equivalent) for controlling how long to wait between sending the defined
+# STOPSIGNAL and sending SIGKILL (which is likely to cause data corruption).
+#
+# The default in most runtimes (such as Docker) is 10 seconds, and the
+# documentation at https://www.postgresql.org/docs/12/server-start.html notes
+# that even 90 seconds may not be long enough in many instances.
+
+EXPOSE 5432
+CMD ["postgres"]

13/alpine3.18/docker-entrypoint.sh

@@ -0,0 +1,351 @@
+#!/usr/bin/env bash
+set -Eeo pipefail
+# TODO swap to -Eeuo pipefail above (after handling all potentially-unset variables)
+
+# usage: file_env VAR [DEFAULT]
+#    ie: file_env 'XYZ_DB_PASSWORD' 'example'
+# (will allow for "$XYZ_DB_PASSWORD_FILE" to fill in the value of
+#  "$XYZ_DB_PASSWORD" from a file, especially for Docker's secrets feature)
+file_env() {
+	local var="$1"
+	local fileVar="${var}_FILE"
+	local def="${2:-}"
+	if [ "${!var:-}" ] && [ "${!fileVar:-}" ]; then
+		printf >&2 'error: both %s and %s are set (but are exclusive)\n' "$var" "$fileVar"
+		exit 1
+	fi
+	local val="$def"
+	if [ "${!var:-}" ]; then
+		val="${!var}"
+	elif [ "${!fileVar:-}" ]; then
+		val="$(< "${!fileVar}")"
+	fi
+	export "$var"="$val"
+	unset "$fileVar"
+}
+
+# check to see if this file is being run or sourced from another script
+_is_sourced() {
+	# https://unix.stackexchange.com/a/215279
+	[ "${#FUNCNAME[@]}" -ge 2 ] \
+		&& [ "${FUNCNAME[0]}" = '_is_sourced' ] \
+		&& [ "${FUNCNAME[1]}" = 'source' ]
+}
+
+# used to create initial postgres directories and if run as root, ensure ownership to the "postgres" user
+docker_create_db_directories() {
+	local user; user="$(id -u)"
+
+	mkdir -p "$PGDATA"
+	# ignore failure since there are cases where we can't chmod (and PostgreSQL might fail later anyhow - it's picky about permissions of this directory)
+	chmod 00700 "$PGDATA" || :
+
+	# ignore failure since it will be fine when using the image provided directory; see also https://github.com/docker-library/postgres/pull/289
+	mkdir -p /var/run/postgresql || :
+	chmod 03775 /var/run/postgresql || :
+
+	# Create the transaction log directory before initdb is run so the directory is owned by the correct user
+	if [ -n "${POSTGRES_INITDB_WALDIR:-}" ]; then
+		mkdir -p "$POSTGRES_INITDB_WALDIR"
+		if [ "$user" = '0' ]; then
+			find "$POSTGRES_INITDB_WALDIR" \! -user postgres -exec chown postgres '{}' +
+		fi
+		chmod 700 "$POSTGRES_INITDB_WALDIR"
+	fi
+
+	# allow the container to be started with `--user`
+	if [ "$user" = '0' ]; then
+		find "$PGDATA" \! -user postgres -exec chown postgres '{}' +
+		find /var/run/postgresql \! -user postgres -exec chown postgres '{}' +
+	fi
+}
+
+# initialize empty PGDATA directory with new database via 'initdb'
+# arguments to `initdb` can be passed via POSTGRES_INITDB_ARGS or as arguments to this function
+# `initdb` automatically creates the "postgres", "template0", and "template1" dbnames
+# this is also where the database user is created, specified by `POSTGRES_USER` env
+docker_init_database_dir() {
+	# "initdb" is particular about the current user existing in "/etc/passwd", so we use "nss_wrapper" to fake that if necessary
+	# see https://github.com/docker-library/postgres/pull/253, https://github.com/docker-library/postgres/issues/359, https://cwrap.org/nss_wrapper.html
+	local uid; uid="$(id -u)"
+	if ! getent passwd "$uid" &> /dev/null; then
+		# see if we can find a suitable "libnss_wrapper.so" (https://salsa.debian.org/sssd-team/nss-wrapper/-/commit/b9925a653a54e24d09d9b498a2d913729f7abb15)
+		local wrapper
+		for wrapper in {/usr,}/lib{/*,}/libnss_wrapper.so; do
+			if [ -s "$wrapper" ]; then
+				NSS_WRAPPER_PASSWD="$(mktemp)"
+				NSS_WRAPPER_GROUP="$(mktemp)"
+				export LD_PRELOAD="$wrapper" NSS_WRAPPER_PASSWD NSS_WRAPPER_GROUP
+				local gid; gid="$(id -g)"
+				printf 'postgres:x:%s:%s:PostgreSQL:%s:/bin/false\n' "$uid" "$gid" "$PGDATA" > "$NSS_WRAPPER_PASSWD"
+				printf 'postgres:x:%s:\n' "$gid" > "$NSS_WRAPPER_GROUP"
+				break
+			fi
+		done
+	fi
+
+	if [ -n "${POSTGRES_INITDB_WALDIR:-}" ]; then
+		set -- --waldir "$POSTGRES_INITDB_WALDIR" "$@"
+	fi
+
+	# --pwfile refuses to handle a properly-empty file (hence the "\n"): https://github.com/docker-library/postgres/issues/1025
+	eval 'initdb --username="$POSTGRES_USER" --pwfile=<(printf "%s\n" "$POSTGRES_PASSWORD") '"$POSTGRES_INITDB_ARGS"' "$@"'
+
+	# unset/cleanup "nss_wrapper" bits
+	if [[ "${LD_PRELOAD:-}" == */libnss_wrapper.so ]]; then
+		rm -f "$NSS_WRAPPER_PASSWD" "$NSS_WRAPPER_GROUP"
+		unset LD_PRELOAD NSS_WRAPPER_PASSWD NSS_WRAPPER_GROUP
+	fi
+}
+
+# print large warning if POSTGRES_PASSWORD is long
+# error if both POSTGRES_PASSWORD is empty and POSTGRES_HOST_AUTH_METHOD is not 'trust'
+# print large warning if POSTGRES_HOST_AUTH_METHOD is set to 'trust'
+# assumes database is not set up, ie: [ -z "$DATABASE_ALREADY_EXISTS" ]
+docker_verify_minimum_env() {
+	# check password first so we can output the warning before postgres
+	# messes it up
+	if [ "${#POSTGRES_PASSWORD}" -ge 100 ]; then
+		cat >&2 <<-'EOWARN'
+
+			WARNING: The supplied POSTGRES_PASSWORD is 100+ characters.
+
+			  This will not work if used via PGPASSWORD with "psql".
+
+			  https://www.postgresql.org/message-id/flat/E1Rqxp2-0004Qt-PL%40wrigleys.postgresql.org (BUG #6412)
+			  https://github.com/docker-library/postgres/issues/507
+
+		EOWARN
+	fi
+	if [ -z "$POSTGRES_PASSWORD" ] && [ 'trust' != "$POSTGRES_HOST_AUTH_METHOD" ]; then
+		# The - option suppresses leading tabs but *not* spaces. :)
+		cat >&2 <<-'EOE'
+			Error: Database is uninitialized and superuser password is not specified.
+			       You must specify POSTGRES_PASSWORD to a non-empty value for the
+			       superuser. For example, "-e POSTGRES_PASSWORD=password" on "docker run".
+
+			       You may also use "POSTGRES_HOST_AUTH_METHOD=trust" to allow all
+			       connections without a password. This is *not* recommended.
+
+			       See PostgreSQL documentation about "trust":
+			       https://www.postgresql.org/docs/current/auth-trust.html
+		EOE
+		exit 1
+	fi
+	if [ 'trust' = "$POSTGRES_HOST_AUTH_METHOD" ]; then
+		cat >&2 <<-'EOWARN'
+			********************************************************************************
+			WARNING: POSTGRES_HOST_AUTH_METHOD has been set to "trust". This will allow
+			         anyone with access to the Postgres port to access your database without
+			         a password, even if POSTGRES_PASSWORD is set. See PostgreSQL
+			         documentation about "trust":
+			         https://www.postgresql.org/docs/current/auth-trust.html
+			         In Docker's default configuration, this is effectively any other
+			         container on the same system.
+
+			         It is not recommended to use POSTGRES_HOST_AUTH_METHOD=trust. Replace
+			         it with "-e POSTGRES_PASSWORD=password" instead to set a password in
+			         "docker run".
+			********************************************************************************
+		EOWARN
+	fi
+}
+
+# usage: docker_process_init_files [file [file [...]]]
+#    ie: docker_process_init_files /always-initdb.d/*
+# process initializer files, based on file extensions and permissions
+docker_process_init_files() {
+	# psql here for backwards compatibility "${psql[@]}"
+	psql=( docker_process_sql )
+
+	printf '\n'
+	local f
+	for f; do
+		case "$f" in
+			*.sh)
+				# https://github.com/docker-library/postgres/issues/450#issuecomment-393167936
+				# https://github.com/docker-library/postgres/pull/452
+				if [ -x "$f" ]; then
+					printf '%s: running %s\n' "$0" "$f"
+					"$f"
+				else
+					printf '%s: sourcing %s\n' "$0" "$f"
+					. "$f"
+				fi
+				;;
+			*.sql)     printf '%s: running %s\n' "$0" "$f"; docker_process_sql -f "$f"; printf '\n' ;;
+			*.sql.gz)  printf '%s: running %s\n' "$0" "$f"; gunzip -c "$f" | docker_process_sql; printf '\n' ;;
+			*.sql.xz)  printf '%s: running %s\n' "$0" "$f"; xzcat "$f" | docker_process_sql; printf '\n' ;;
+			*.sql.zst) printf '%s: running %s\n' "$0" "$f"; zstd -dc "$f" | docker_process_sql; printf '\n' ;;
+			*)         printf '%s: ignoring %s\n' "$0" "$f" ;;
+		esac
+		printf '\n'
+	done
+}
+
+# Execute sql script, passed via stdin (or -f flag of pqsl)
+# usage: docker_process_sql [psql-cli-args]
+#    ie: docker_process_sql --dbname=mydb <<<'INSERT ...'
+#    ie: docker_process_sql -f my-file.sql
+#    ie: docker_process_sql <my-file.sql
+docker_process_sql() {
+	local query_runner=( psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --no-password --no-psqlrc )
+	if [ -n "$POSTGRES_DB" ]; then
+		query_runner+=( --dbname "$POSTGRES_DB" )
+	fi
+
+	PGHOST= PGHOSTADDR= "${query_runner[@]}" "$@"
+}
+
+# create initial database
+# uses environment variables for input: POSTGRES_DB
+docker_setup_db() {
+	local dbAlreadyExists
+	dbAlreadyExists="$(
+		POSTGRES_DB= docker_process_sql --dbname postgres --set db="$POSTGRES_DB" --tuples-only <<-'EOSQL'
+			SELECT 1 FROM pg_database WHERE datname = :'db' ;
+		EOSQL
+	)"
+	if [ -z "$dbAlreadyExists" ]; then
+		POSTGRES_DB= docker_process_sql --dbname postgres --set db="$POSTGRES_DB" <<-'EOSQL'
+			CREATE DATABASE :"db" ;
+		EOSQL
+		printf '\n'
+	fi
+}
+
+# Loads various settings that are used elsewhere in the script
+# This should be called before any other functions
+docker_setup_env() {
+	file_env 'POSTGRES_PASSWORD'
+
+	file_env 'POSTGRES_USER' 'postgres'
+	file_env 'POSTGRES_DB' "$POSTGRES_USER"
+	file_env 'POSTGRES_INITDB_ARGS'
+	: "${POSTGRES_HOST_AUTH_METHOD:=}"
+
+	declare -g DATABASE_ALREADY_EXISTS
+	# look specifically for PG_VERSION, as it is expected in the DB dir
+	if [ -s "$PGDATA/PG_VERSION" ]; then
+		DATABASE_ALREADY_EXISTS='true'
+	fi
+}
+
+# append POSTGRES_HOST_AUTH_METHOD to pg_hba.conf for "host" connections
+# all arguments will be passed along as arguments to `postgres` for getting the value of 'password_encryption'
+pg_setup_hba_conf() {
+	# default authentication method is md5 on versions before 14
+	# https://www.postgresql.org/about/news/postgresql-14-released-2318/
+	if [ "$1" = 'postgres' ]; then
+		shift
+	fi
+	local auth
+	# check the default/configured encryption and use that as the auth method
+	auth="$(postgres -C password_encryption "$@")"
+	: "${POSTGRES_HOST_AUTH_METHOD:=$auth}"
+	{
+		printf '\n'
+		if [ 'trust' = "$POSTGRES_HOST_AUTH_METHOD" ]; then
+			printf '# warning trust is enabled for all connections\n'
+			printf '# see https://www.postgresql.org/docs/12/auth-trust.html\n'
+		fi
+		printf 'host all all all %s\n' "$POSTGRES_HOST_AUTH_METHOD"
+	} >> "$PGDATA/pg_hba.conf"
+}
+
+# start socket-only postgresql server for setting up or running scripts
+# all arguments will be passed along as arguments to `postgres` (via pg_ctl)
+docker_temp_server_start() {
+	if [ "$1" = 'postgres' ]; then
+		shift
+	fi
+
+	# internal start of server in order to allow setup using psql client
+	# does not listen on external TCP/IP and waits until start finishes
+	set -- "$@" -c listen_addresses='' -p "${PGPORT:-5432}"
+
+	PGUSER="${PGUSER:-$POSTGRES_USER}" \
+	pg_ctl -D "$PGDATA" \
+		-o "$(printf '%q ' "$@")" \
+		-w start
+}
+
+# stop postgresql server after done setting up user and running scripts
+docker_temp_server_stop() {
+	PGUSER="${PGUSER:-postgres}" \
+	pg_ctl -D "$PGDATA" -m fast -w stop
+}
+
+# check arguments for an option that would cause postgres to stop
+# return true if there is one
+_pg_want_help() {
+	local arg
+	for arg; do
+		case "$arg" in
+			# postgres --help | grep 'then exit'
+			# leaving out -C on purpose since it always fails and is unhelpful:
+			# postgres: could not access the server configuration file "/var/lib/postgresql/data/postgresql.conf": No such file or directory
+			-'?'|--help|--describe-config|-V|--version)
+				return 0
+				;;
+		esac
+	done
+	return 1
+}
+
+_main() {
+	# if first arg looks like a flag, assume we want to run postgres server
+	if [ "${1:0:1}" = '-' ]; then
+		set -- postgres "$@"
+	fi
+
+	if [ "$1" = 'postgres' ] && ! _pg_want_help "$@"; then
+		docker_setup_env
+		# setup data directories and permissions (when run as root)
+		docker_create_db_directories
+		if [ "$(id -u)" = '0' ]; then
+			# then restart script as postgres user
+			exec su-exec postgres "$BASH_SOURCE" "$@"
+		fi
+
+		# only run initialization on an empty data directory
+		if [ -z "$DATABASE_ALREADY_EXISTS" ]; then
+			docker_verify_minimum_env
+
+			# check dir permissions to reduce likelihood of half-initialized database
+			ls /docker-entrypoint-initdb.d/ > /dev/null
+
+			docker_init_database_dir
+			pg_setup_hba_conf "$@"
+
+			# PGPASSWORD is required for psql when authentication is required for 'local' connections via pg_hba.conf and is otherwise harmless
+			# e.g. when '--auth=md5' or '--auth-local=md5' is used in POSTGRES_INITDB_ARGS
+			export PGPASSWORD="${PGPASSWORD:-$POSTGRES_PASSWORD}"
+			docker_temp_server_start "$@"
+
+			docker_setup_db
+			docker_process_init_files /docker-entrypoint-initdb.d/*
+
+			docker_temp_server_stop
+			unset PGPASSWORD
+
+			cat <<-'EOM'
+
+				PostgreSQL init process complete; ready for start up.
+
+			EOM
+		else
+			cat <<-'EOM'
+
+				PostgreSQL Database directory appears to contain a database; Skipping initialization
+
+			EOM
+		fi
+	fi
+
+	exec "$@"
+}
+
+if ! _is_sourced; then
+	_main "$@"
+fi

14/alpine3.17/Dockerfile

@@ -0,0 +1,207 @@
+#
+# NOTE: THIS DOCKERFILE IS GENERATED VIA "apply-templates.sh"
+#
+# PLEASE DO NOT EDIT IT DIRECTLY.
+#
+
+FROM alpine:3.17
+
+# 70 is the standard uid/gid for "postgres" in Alpine
+# https://git.alpinelinux.org/aports/tree/main/postgresql/postgresql.pre-install?h=3.12-stable
+RUN set -eux; \
+	addgroup -g 70 -S postgres; \
+	adduser -u 70 -S -D -G postgres -H -h /var/lib/postgresql -s /bin/sh postgres; \
+	mkdir -p /var/lib/postgresql; \
+	chown -R postgres:postgres /var/lib/postgresql
+
+# su-exec (gosu-compatible) is installed further down
+
+# make the "en_US.UTF-8" locale so postgres will be utf-8 enabled by default
+# alpine doesn't require explicit locale-file generation
+ENV LANG en_US.utf8
+
+RUN mkdir /docker-entrypoint-initdb.d
+
+ENV PG_MAJOR 14
+ENV PG_VERSION 14.8
+ENV PG_SHA256 39d38f0030737ed03835debeefee3b37d335462ce4995e2497bc38d621ebe45a
+
+ENV DOCKER_PG_LLVM_DEPS \
+		llvm15-dev \
+		clang15
+
+RUN set -eux; \
+	\
+	wget -O postgresql.tar.bz2 "https://ftp.postgresql.org/pub/source/v$PG_VERSION/postgresql-$PG_VERSION.tar.bz2"; \
+	echo "$PG_SHA256 *postgresql.tar.bz2" | sha256sum -c -; \
+	mkdir -p /usr/src/postgresql; \
+	tar \
+		--extract \
+		--file postgresql.tar.bz2 \
+		--directory /usr/src/postgresql \
+		--strip-components 1 \
+	; \
+	rm postgresql.tar.bz2; \
+	\
+	apk add --no-cache --virtual .build-deps \
+		$DOCKER_PG_LLVM_DEPS \
+		bison \
+		coreutils \
+		dpkg-dev dpkg \
+		flex \
+		g++ \
+		gcc \
+		krb5-dev \
+		libc-dev \
+		libedit-dev \
+		libxml2-dev \
+		libxslt-dev \
+		linux-headers \
+		make \
+		openldap-dev \
+		openssl-dev \
+		perl-dev \
+		perl-ipc-run \
+		perl-utils \
+		python3-dev \
+		tcl-dev \
+		util-linux-dev \
+		zlib-dev \
+# https://www.postgresql.org/docs/10/static/release-10.html#id-1.11.6.9.5.13
+		icu-dev \
+# https://www.postgresql.org/docs/14/release-14.html#id-1.11.6.5.5.3.7
+		lz4-dev \
+	; \
+	\
+	cd /usr/src/postgresql; \
+# update "DEFAULT_PGSOCKET_DIR" to "/var/run/postgresql" (matching Debian)
+# see https://anonscm.debian.org/git/pkg-postgresql/postgresql.git/tree/debian/patches/51-default-sockets-in-var.patch?id=8b539fcb3e093a521c095e70bdfa76887217b89f
+	awk '$1 == "#define" && $2 == "DEFAULT_PGSOCKET_DIR" && $3 == "\"/tmp\"" { $3 = "\"/var/run/postgresql\""; print; next } { print }' src/include/pg_config_manual.h > src/include/pg_config_manual.h.new; \
+	grep '/var/run/postgresql' src/include/pg_config_manual.h.new; \
+	mv src/include/pg_config_manual.h.new src/include/pg_config_manual.h; \
+	gnuArch="$(dpkg-architecture --query DEB_BUILD_GNU_TYPE)"; \
+# explicitly update autoconf config.guess and config.sub so they support more arches/libcs
+	wget -O config/config.guess 'https://git.savannah.gnu.org/cgit/config.git/plain/config.guess?id=7d3d27baf8107b630586c962c057e22149653deb'; \
+	wget -O config/config.sub 'https://git.savannah.gnu.org/cgit/config.git/plain/config.sub?id=7d3d27baf8107b630586c962c057e22149653deb'; \
+	\
+# https://git.alpinelinux.org/aports/tree/community/postgresql12/APKBUILD?h=3.18-stable&id=a470294e6d6ca7059e41c54769b7c3c26ec901d4#n158
+	export LLVM_CONFIG="/usr/lib/llvm15/bin/llvm-config"; \
+# https://git.alpinelinux.org/aports/tree/community/postgresql12/APKBUILD?h=3.18-stable&id=a470294e6d6ca7059e41c54769b7c3c26ec901d4#n163
+	export CLANG=clang-15; \
+	\
+# configure options taken from:
+# https://anonscm.debian.org/cgit/pkg-postgresql/postgresql.git/tree/debian/rules?h=9.5
+	./configure \
+		--enable-option-checking=fatal \
+		--build="$gnuArch" \
+# "/usr/src/postgresql/src/backend/access/common/tupconvert.c:105: undefined reference to `libintl_gettext'"
+#		--enable-nls \
+		--enable-integer-datetimes \
+		--enable-thread-safety \
+		--enable-tap-tests \
+# skip debugging info -- we want tiny size instead
+#		--enable-debug \
+		--disable-rpath \
+		--with-uuid=e2fs \
+		--with-gnu-ld \
+		--with-pgport=5432 \
+		--with-system-tzdata=/usr/share/zoneinfo \
+		--prefix=/usr/local \
+		--with-includes=/usr/local/include \
+		--with-libraries=/usr/local/lib \
+		--with-gssapi \
+		--with-ldap \
+		--with-tcl \
+		--with-perl \
+		--with-python \
+#		--with-pam \
+		--with-openssl \
+		--with-libxml \
+		--with-libxslt \
+		--with-icu \
+		--with-llvm \
+		--with-lz4 \
+	; \
+	make -j "$(nproc)" world; \
+	make install-world; \
+	make -C contrib install; \
+	\
+	runDeps="$( \
+		scanelf --needed --nobanner --format '%n#p' --recursive /usr/local \
+			| tr ',' '\n' \
+			| sort -u \
+			| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
+# Remove plperl, plpython and pltcl dependencies by default to save image size
+# To use the pl extensions, those have to be installed in a derived image
+			| grep -v -e perl -e python -e tcl \
+	)"; \
+	apk add --no-cache --virtual .postgresql-rundeps \
+		$runDeps \
+		bash \
+		su-exec \
+		tzdata \
+		zstd \
+# https://wiki.alpinelinux.org/wiki/Release_Notes_for_Alpine_3.16.0#ICU_data_split
+		icu-data-full \
+# nss_wrapper is not availble on ppc64le: "test case segfaults in ppc64le"
+# https://git.alpinelinux.org/aports/commit/testing/nss_wrapper/APKBUILD?h=3.17-stable&id=94d81ceeb58cff448d489bbcbe9a6d40c9991663
+		$([ "$(apk --print-arch)" != 'ppc64le' ] && echo 'nss_wrapper') \
+	; \
+	apk del --no-network .build-deps; \
+	cd /; \
+	rm -rf \
+		/usr/src/postgresql \
+		/usr/local/share/doc \
+		/usr/local/share/man \
+	; \
+	\
+	postgres --version
+
+# make the sample config easier to munge (and "correct by default")
+RUN set -eux; \
+	cp -v /usr/local/share/postgresql/postgresql.conf.sample /usr/local/share/postgresql/postgresql.conf.sample.orig; \
+	sed -ri "s!^#?(listen_addresses)\s*=\s*\S+.*!\1 = '*'!" /usr/local/share/postgresql/postgresql.conf.sample; \
+	grep -F "listen_addresses = '*'" /usr/local/share/postgresql/postgresql.conf.sample
+
+RUN mkdir -p /var/run/postgresql && chown -R postgres:postgres /var/run/postgresql && chmod 3777 /var/run/postgresql
+
+ENV PGDATA /var/lib/postgresql/data
+# this 777 will be replaced by 700 at runtime (allows semi-arbitrary "--user" values)
+RUN mkdir -p "$PGDATA" && chown -R postgres:postgres "$PGDATA" && chmod 1777 "$PGDATA"
+VOLUME /var/lib/postgresql/data
+
+COPY docker-entrypoint.sh /usr/local/bin/
+ENTRYPOINT ["docker-entrypoint.sh"]
+
+# We set the default STOPSIGNAL to SIGINT, which corresponds to what PostgreSQL
+# calls "Fast Shutdown mode" wherein new connections are disallowed and any
+# in-progress transactions are aborted, allowing PostgreSQL to stop cleanly and
+# flush tables to disk, which is the best compromise available to avoid data
+# corruption.
+#
+# Users who know their applications do not keep open long-lived idle connections
+# may way to use a value of SIGTERM instead, which corresponds to "Smart
+# Shutdown mode" in which any existing sessions are allowed to finish and the
+# server stops when all sessions are terminated.
+#
+# See https://www.postgresql.org/docs/12/server-shutdown.html for more details
+# about available PostgreSQL server shutdown signals.
+#
+# See also https://www.postgresql.org/docs/12/server-start.html for further
+# justification of this as the default value, namely that the example (and
+# shipped) systemd service files use the "Fast Shutdown mode" for service
+# termination.
+#
+STOPSIGNAL SIGINT
+#
+# An additional setting that is recommended for all users regardless of this
+# value is the runtime "--stop-timeout" (or your orchestrator/runtime's
+# equivalent) for controlling how long to wait between sending the defined
+# STOPSIGNAL and sending SIGKILL (which is likely to cause data corruption).
+#
+# The default in most runtimes (such as Docker) is 10 seconds, and the
+# documentation at https://www.postgresql.org/docs/12/server-start.html notes
+# that even 90 seconds may not be long enough in many instances.
+
+EXPOSE 5432
+CMD ["postgres"]

14/alpine3.17/docker-entrypoint.sh

@@ -0,0 +1,351 @@
+#!/usr/bin/env bash
+set -Eeo pipefail
+# TODO swap to -Eeuo pipefail above (after handling all potentially-unset variables)
+
+# usage: file_env VAR [DEFAULT]
+#    ie: file_env 'XYZ_DB_PASSWORD' 'example'
+# (will allow for "$XYZ_DB_PASSWORD_FILE" to fill in the value of
+#  "$XYZ_DB_PASSWORD" from a file, especially for Docker's secrets feature)
+file_env() {
+	local var="$1"
+	local fileVar="${var}_FILE"
+	local def="${2:-}"
+	if [ "${!var:-}" ] && [ "${!fileVar:-}" ]; then
+		printf >&2 'error: both %s and %s are set (but are exclusive)\n' "$var" "$fileVar"
+		exit 1
+	fi
+	local val="$def"
+	if [ "${!var:-}" ]; then
+		val="${!var}"
+	elif [ "${!fileVar:-}" ]; then
+		val="$(< "${!fileVar}")"
+	fi
+	export "$var"="$val"
+	unset "$fileVar"
+}
+
+# check to see if this file is being run or sourced from another script
+_is_sourced() {
+	# https://unix.stackexchange.com/a/215279
+	[ "${#FUNCNAME[@]}" -ge 2 ] \
+		&& [ "${FUNCNAME[0]}" = '_is_sourced' ] \
+		&& [ "${FUNCNAME[1]}" = 'source' ]
+}
+
+# used to create initial postgres directories and if run as root, ensure ownership to the "postgres" user
+docker_create_db_directories() {
+	local user; user="$(id -u)"
+
+	mkdir -p "$PGDATA"
+	# ignore failure since there are cases where we can't chmod (and PostgreSQL might fail later anyhow - it's picky about permissions of this directory)
+	chmod 00700 "$PGDATA" || :
+
+	# ignore failure since it will be fine when using the image provided directory; see also https://github.com/docker-library/postgres/pull/289
+	mkdir -p /var/run/postgresql || :
+	chmod 03775 /var/run/postgresql || :
+
+	# Create the transaction log directory before initdb is run so the directory is owned by the correct user
+	if [ -n "${POSTGRES_INITDB_WALDIR:-}" ]; then
+		mkdir -p "$POSTGRES_INITDB_WALDIR"
+		if [ "$user" = '0' ]; then
+			find "$POSTGRES_INITDB_WALDIR" \! -user postgres -exec chown postgres '{}' +
+		fi
+		chmod 700 "$POSTGRES_INITDB_WALDIR"
+	fi
+
+	# allow the container to be started with `--user`
+	if [ "$user" = '0' ]; then
+		find "$PGDATA" \! -user postgres -exec chown postgres '{}' +
+		find /var/run/postgresql \! -user postgres -exec chown postgres '{}' +
+	fi
+}
+
+# initialize empty PGDATA directory with new database via 'initdb'
+# arguments to `initdb` can be passed via POSTGRES_INITDB_ARGS or as arguments to this function
+# `initdb` automatically creates the "postgres", "template0", and "template1" dbnames
+# this is also where the database user is created, specified by `POSTGRES_USER` env
+docker_init_database_dir() {
+	# "initdb" is particular about the current user existing in "/etc/passwd", so we use "nss_wrapper" to fake that if necessary
+	# see https://github.com/docker-library/postgres/pull/253, https://github.com/docker-library/postgres/issues/359, https://cwrap.org/nss_wrapper.html
+	local uid; uid="$(id -u)"
+	if ! getent passwd "$uid" &> /dev/null; then
+		# see if we can find a suitable "libnss_wrapper.so" (https://salsa.debian.org/sssd-team/nss-wrapper/-/commit/b9925a653a54e24d09d9b498a2d913729f7abb15)
+		local wrapper
+		for wrapper in {/usr,}/lib{/*,}/libnss_wrapper.so; do
+			if [ -s "$wrapper" ]; then
+				NSS_WRAPPER_PASSWD="$(mktemp)"
+				NSS_WRAPPER_GROUP="$(mktemp)"
+				export LD_PRELOAD="$wrapper" NSS_WRAPPER_PASSWD NSS_WRAPPER_GROUP
+				local gid; gid="$(id -g)"
+				printf 'postgres:x:%s:%s:PostgreSQL:%s:/bin/false\n' "$uid" "$gid" "$PGDATA" > "$NSS_WRAPPER_PASSWD"
+				printf 'postgres:x:%s:\n' "$gid" > "$NSS_WRAPPER_GROUP"
+				break
+			fi
+		done
+	fi
+
+	if [ -n "${POSTGRES_INITDB_WALDIR:-}" ]; then
+		set -- --waldir "$POSTGRES_INITDB_WALDIR" "$@"
+	fi
+
+	# --pwfile refuses to handle a properly-empty file (hence the "\n"): https://github.com/docker-library/postgres/issues/1025
+	eval 'initdb --username="$POSTGRES_USER" --pwfile=<(printf "%s\n" "$POSTGRES_PASSWORD") '"$POSTGRES_INITDB_ARGS"' "$@"'
+
+	# unset/cleanup "nss_wrapper" bits
+	if [[ "${LD_PRELOAD:-}" == */libnss_wrapper.so ]]; then
+		rm -f "$NSS_WRAPPER_PASSWD" "$NSS_WRAPPER_GROUP"
+		unset LD_PRELOAD NSS_WRAPPER_PASSWD NSS_WRAPPER_GROUP
+	fi
+}
+
+# print large warning if POSTGRES_PASSWORD is long
+# error if both POSTGRES_PASSWORD is empty and POSTGRES_HOST_AUTH_METHOD is not 'trust'
+# print large warning if POSTGRES_HOST_AUTH_METHOD is set to 'trust'
+# assumes database is not set up, ie: [ -z "$DATABASE_ALREADY_EXISTS" ]
+docker_verify_minimum_env() {
+	# check password first so we can output the warning before postgres
+	# messes it up
+	if [ "${#POSTGRES_PASSWORD}" -ge 100 ]; then
+		cat >&2 <<-'EOWARN'
+
+			WARNING: The supplied POSTGRES_PASSWORD is 100+ characters.
+
+			  This will not work if used via PGPASSWORD with "psql".
+
+			  https://www.postgresql.org/message-id/flat/E1Rqxp2-0004Qt-PL%40wrigleys.postgresql.org (BUG #6412)
+			  https://github.com/docker-library/postgres/issues/507
+
+		EOWARN
+	fi
+	if [ -z "$POSTGRES_PASSWORD" ] && [ 'trust' != "$POSTGRES_HOST_AUTH_METHOD" ]; then
+		# The - option suppresses leading tabs but *not* spaces. :)
+		cat >&2 <<-'EOE'
+			Error: Database is uninitialized and superuser password is not specified.
+			       You must specify POSTGRES_PASSWORD to a non-empty value for the
+			       superuser. For example, "-e POSTGRES_PASSWORD=password" on "docker run".
+
+			       You may also use "POSTGRES_HOST_AUTH_METHOD=trust" to allow all
+			       connections without a password. This is *not* recommended.
+
+			       See PostgreSQL documentation about "trust":
+			       https://www.postgresql.org/docs/current/auth-trust.html
+		EOE
+		exit 1
+	fi
+	if [ 'trust' = "$POSTGRES_HOST_AUTH_METHOD" ]; then
+		cat >&2 <<-'EOWARN'
+			********************************************************************************
+			WARNING: POSTGRES_HOST_AUTH_METHOD has been set to "trust". This will allow
+			         anyone with access to the Postgres port to access your database without
+			         a password, even if POSTGRES_PASSWORD is set. See PostgreSQL
+			         documentation about "trust":
+			         https://www.postgresql.org/docs/current/auth-trust.html
+			         In Docker's default configuration, this is effectively any other
+			         container on the same system.
+
+			         It is not recommended to use POSTGRES_HOST_AUTH_METHOD=trust. Replace
+			         it with "-e POSTGRES_PASSWORD=password" instead to set a password in
+			         "docker run".
+			********************************************************************************
+		EOWARN
+	fi
+}
+
+# usage: docker_process_init_files [file [file [...]]]
+#    ie: docker_process_init_files /always-initdb.d/*
+# process initializer files, based on file extensions and permissions
+docker_process_init_files() {
+	# psql here for backwards compatibility "${psql[@]}"
+	psql=( docker_process_sql )
+
+	printf '\n'
+	local f
+	for f; do
+		case "$f" in
+			*.sh)
+				# https://github.com/docker-library/postgres/issues/450#issuecomment-393167936
+				# https://github.com/docker-library/postgres/pull/452
+				if [ -x "$f" ]; then
+					printf '%s: running %s\n' "$0" "$f"
+					"$f"
+				else
+					printf '%s: sourcing %s\n' "$0" "$f"
+					. "$f"
+				fi
+				;;
+			*.sql)     printf '%s: running %s\n' "$0" "$f"; docker_process_sql -f "$f"; printf '\n' ;;
+			*.sql.gz)  printf '%s: running %s\n' "$0" "$f"; gunzip -c "$f" | docker_process_sql; printf '\n' ;;
+			*.sql.xz)  printf '%s: running %s\n' "$0" "$f"; xzcat "$f" | docker_process_sql; printf '\n' ;;
+			*.sql.zst) printf '%s: running %s\n' "$0" "$f"; zstd -dc "$f" | docker_process_sql; printf '\n' ;;
+			*)         printf '%s: ignoring %s\n' "$0" "$f" ;;
+		esac
+		printf '\n'
+	done
+}
+
+# Execute sql script, passed via stdin (or -f flag of pqsl)
+# usage: docker_process_sql [psql-cli-args]
+#    ie: docker_process_sql --dbname=mydb <<<'INSERT ...'
+#    ie: docker_process_sql -f my-file.sql
+#    ie: docker_process_sql <my-file.sql
+docker_process_sql() {
+	local query_runner=( psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --no-password --no-psqlrc )
+	if [ -n "$POSTGRES_DB" ]; then
+		query_runner+=( --dbname "$POSTGRES_DB" )
+	fi
+
+	PGHOST= PGHOSTADDR= "${query_runner[@]}" "$@"
+}
+
+# create initial database
+# uses environment variables for input: POSTGRES_DB
+docker_setup_db() {
+	local dbAlreadyExists
+	dbAlreadyExists="$(
+		POSTGRES_DB= docker_process_sql --dbname postgres --set db="$POSTGRES_DB" --tuples-only <<-'EOSQL'
+			SELECT 1 FROM pg_database WHERE datname = :'db' ;
+		EOSQL
+	)"
+	if [ -z "$dbAlreadyExists" ]; then
+		POSTGRES_DB= docker_process_sql --dbname postgres --set db="$POSTGRES_DB" <<-'EOSQL'
+			CREATE DATABASE :"db" ;
+		EOSQL
+		printf '\n'
+	fi
+}
+
+# Loads various settings that are used elsewhere in the script
+# This should be called before any other functions
+docker_setup_env() {
+	file_env 'POSTGRES_PASSWORD'
+
+	file_env 'POSTGRES_USER' 'postgres'
+	file_env 'POSTGRES_DB' "$POSTGRES_USER"
+	file_env 'POSTGRES_INITDB_ARGS'
+	: "${POSTGRES_HOST_AUTH_METHOD:=}"
+
+	declare -g DATABASE_ALREADY_EXISTS
+	# look specifically for PG_VERSION, as it is expected in the DB dir
+	if [ -s "$PGDATA/PG_VERSION" ]; then
+		DATABASE_ALREADY_EXISTS='true'
+	fi
+}
+
+# append POSTGRES_HOST_AUTH_METHOD to pg_hba.conf for "host" connections
+# all arguments will be passed along as arguments to `postgres` for getting the value of 'password_encryption'
+pg_setup_hba_conf() {
+	# default authentication method is md5 on versions before 14
+	# https://www.postgresql.org/about/news/postgresql-14-released-2318/
+	if [ "$1" = 'postgres' ]; then
+		shift
+	fi
+	local auth
+	# check the default/configured encryption and use that as the auth method
+	auth="$(postgres -C password_encryption "$@")"
+	: "${POSTGRES_HOST_AUTH_METHOD:=$auth}"
+	{
+		printf '\n'
+		if [ 'trust' = "$POSTGRES_HOST_AUTH_METHOD" ]; then
+			printf '# warning trust is enabled for all connections\n'
+			printf '# see https://www.postgresql.org/docs/12/auth-trust.html\n'
+		fi
+		printf 'host all all all %s\n' "$POSTGRES_HOST_AUTH_METHOD"
+	} >> "$PGDATA/pg_hba.conf"
+}
+
+# start socket-only postgresql server for setting up or running scripts
+# all arguments will be passed along as arguments to `postgres` (via pg_ctl)
+docker_temp_server_start() {
+	if [ "$1" = 'postgres' ]; then
+		shift
+	fi
+
+	# internal start of server in order to allow setup using psql client
+	# does not listen on external TCP/IP and waits until start finishes
+	set -- "$@" -c listen_addresses='' -p "${PGPORT:-5432}"
+
+	PGUSER="${PGUSER:-$POSTGRES_USER}" \
+	pg_ctl -D "$PGDATA" \
+		-o "$(printf '%q ' "$@")" \
+		-w start
+}
+
+# stop postgresql server after done setting up user and running scripts
+docker_temp_server_stop() {
+	PGUSER="${PGUSER:-postgres}" \
+	pg_ctl -D "$PGDATA" -m fast -w stop
+}
+
+# check arguments for an option that would cause postgres to stop
+# return true if there is one
+_pg_want_help() {
+	local arg
+	for arg; do
+		case "$arg" in
+			# postgres --help | grep 'then exit'
+			# leaving out -C on purpose since it always fails and is unhelpful:
+			# postgres: could not access the server configuration file "/var/lib/postgresql/data/postgresql.conf": No such file or directory
+			-'?'|--help|--describe-config|-V|--version)
+				return 0
+				;;
+		esac
+	done
+	return 1
+}
+
+_main() {
+	# if first arg looks like a flag, assume we want to run postgres server
+	if [ "${1:0:1}" = '-' ]; then
+		set -- postgres "$@"
+	fi
+
+	if [ "$1" = 'postgres' ] && ! _pg_want_help "$@"; then
+		docker_setup_env
+		# setup data directories and permissions (when run as root)
+		docker_create_db_directories
+		if [ "$(id -u)" = '0' ]; then
+			# then restart script as postgres user
+			exec su-exec postgres "$BASH_SOURCE" "$@"
+		fi
+
+		# only run initialization on an empty data directory
+		if [ -z "$DATABASE_ALREADY_EXISTS" ]; then
+			docker_verify_minimum_env
+
+			# check dir permissions to reduce likelihood of half-initialized database
+			ls /docker-entrypoint-initdb.d/ > /dev/null
+
+			docker_init_database_dir
+			pg_setup_hba_conf "$@"
+
+			# PGPASSWORD is required for psql when authentication is required for 'local' connections via pg_hba.conf and is otherwise harmless
+			# e.g. when '--auth=md5' or '--auth-local=md5' is used in POSTGRES_INITDB_ARGS
+			export PGPASSWORD="${PGPASSWORD:-$POSTGRES_PASSWORD}"
+			docker_temp_server_start "$@"
+
+			docker_setup_db
+			docker_process_init_files /docker-entrypoint-initdb.d/*
+
+			docker_temp_server_stop
+			unset PGPASSWORD
+
+			cat <<-'EOM'
+
+				PostgreSQL init process complete; ready for start up.
+
+			EOM
+		else
+			cat <<-'EOM'
+
+				PostgreSQL Database directory appears to contain a database; Skipping initialization
+
+			EOM
+		fi
+	fi
+
+	exec "$@"
+}
+
+if ! _is_sourced; then
+	_main "$@"
+fi

14/alpine3.18/docker-entrypoint.sh

@@ -0,0 +1,351 @@
+#!/usr/bin/env bash
+set -Eeo pipefail
+# TODO swap to -Eeuo pipefail above (after handling all potentially-unset variables)
+
+# usage: file_env VAR [DEFAULT]
+#    ie: file_env 'XYZ_DB_PASSWORD' 'example'
+# (will allow for "$XYZ_DB_PASSWORD_FILE" to fill in the value of
+#  "$XYZ_DB_PASSWORD" from a file, especially for Docker's secrets feature)
+file_env() {
+	local var="$1"
+	local fileVar="${var}_FILE"
+	local def="${2:-}"
+	if [ "${!var:-}" ] && [ "${!fileVar:-}" ]; then
+		printf >&2 'error: both %s and %s are set (but are exclusive)\n' "$var" "$fileVar"
+		exit 1
+	fi
+	local val="$def"
+	if [ "${!var:-}" ]; then
+		val="${!var}"
+	elif [ "${!fileVar:-}" ]; then
+		val="$(< "${!fileVar}")"
+	fi
+	export "$var"="$val"
+	unset "$fileVar"
+}
+
+# check to see if this file is being run or sourced from another script
+_is_sourced() {
+	# https://unix.stackexchange.com/a/215279
+	[ "${#FUNCNAME[@]}" -ge 2 ] \
+		&& [ "${FUNCNAME[0]}" = '_is_sourced' ] \
+		&& [ "${FUNCNAME[1]}" = 'source' ]
+}
+
+# used to create initial postgres directories and if run as root, ensure ownership to the "postgres" user
+docker_create_db_directories() {
+	local user; user="$(id -u)"
+
+	mkdir -p "$PGDATA"
+	# ignore failure since there are cases where we can't chmod (and PostgreSQL might fail later anyhow - it's picky about permissions of this directory)
+	chmod 00700 "$PGDATA" || :
+
+	# ignore failure since it will be fine when using the image provided directory; see also https://github.com/docker-library/postgres/pull/289
+	mkdir -p /var/run/postgresql || :
+	chmod 03775 /var/run/postgresql || :
+
+	# Create the transaction log directory before initdb is run so the directory is owned by the correct user
+	if [ -n "${POSTGRES_INITDB_WALDIR:-}" ]; then
+		mkdir -p "$POSTGRES_INITDB_WALDIR"
+		if [ "$user" = '0' ]; then
+			find "$POSTGRES_INITDB_WALDIR" \! -user postgres -exec chown postgres '{}' +
+		fi
+		chmod 700 "$POSTGRES_INITDB_WALDIR"
+	fi
+
+	# allow the container to be started with `--user`
+	if [ "$user" = '0' ]; then
+		find "$PGDATA" \! -user postgres -exec chown postgres '{}' +
+		find /var/run/postgresql \! -user postgres -exec chown postgres '{}' +
+	fi
+}
+
+# initialize empty PGDATA directory with new database via 'initdb'
+# arguments to `initdb` can be passed via POSTGRES_INITDB_ARGS or as arguments to this function
+# `initdb` automatically creates the "postgres", "template0", and "template1" dbnames
+# this is also where the database user is created, specified by `POSTGRES_USER` env
+docker_init_database_dir() {
+	# "initdb" is particular about the current user existing in "/etc/passwd", so we use "nss_wrapper" to fake that if necessary
+	# see https://github.com/docker-library/postgres/pull/253, https://github.com/docker-library/postgres/issues/359, https://cwrap.org/nss_wrapper.html
+	local uid; uid="$(id -u)"
+	if ! getent passwd "$uid" &> /dev/null; then
+		# see if we can find a suitable "libnss_wrapper.so" (https://salsa.debian.org/sssd-team/nss-wrapper/-/commit/b9925a653a54e24d09d9b498a2d913729f7abb15)
+		local wrapper
+		for wrapper in {/usr,}/lib{/*,}/libnss_wrapper.so; do
+			if [ -s "$wrapper" ]; then
+				NSS_WRAPPER_PASSWD="$(mktemp)"
+				NSS_WRAPPER_GROUP="$(mktemp)"
+				export LD_PRELOAD="$wrapper" NSS_WRAPPER_PASSWD NSS_WRAPPER_GROUP
+				local gid; gid="$(id -g)"
+				printf 'postgres:x:%s:%s:PostgreSQL:%s:/bin/false\n' "$uid" "$gid" "$PGDATA" > "$NSS_WRAPPER_PASSWD"
+				printf 'postgres:x:%s:\n' "$gid" > "$NSS_WRAPPER_GROUP"
+				break
+			fi
+		done
+	fi
+
+	if [ -n "${POSTGRES_INITDB_WALDIR:-}" ]; then
+		set -- --waldir "$POSTGRES_INITDB_WALDIR" "$@"
+	fi
+
+	# --pwfile refuses to handle a properly-empty file (hence the "\n"): https://github.com/docker-library/postgres/issues/1025
+	eval 'initdb --username="$POSTGRES_USER" --pwfile=<(printf "%s\n" "$POSTGRES_PASSWORD") '"$POSTGRES_INITDB_ARGS"' "$@"'
+
+	# unset/cleanup "nss_wrapper" bits
+	if [[ "${LD_PRELOAD:-}" == */libnss_wrapper.so ]]; then
+		rm -f "$NSS_WRAPPER_PASSWD" "$NSS_WRAPPER_GROUP"
+		unset LD_PRELOAD NSS_WRAPPER_PASSWD NSS_WRAPPER_GROUP
+	fi
+}
+
+# print large warning if POSTGRES_PASSWORD is long
+# error if both POSTGRES_PASSWORD is empty and POSTGRES_HOST_AUTH_METHOD is not 'trust'
+# print large warning if POSTGRES_HOST_AUTH_METHOD is set to 'trust'
+# assumes database is not set up, ie: [ -z "$DATABASE_ALREADY_EXISTS" ]
+docker_verify_minimum_env() {
+	# check password first so we can output the warning before postgres
+	# messes it up
+	if [ "${#POSTGRES_PASSWORD}" -ge 100 ]; then
+		cat >&2 <<-'EOWARN'
+
+			WARNING: The supplied POSTGRES_PASSWORD is 100+ characters.
+
+			  This will not work if used via PGPASSWORD with "psql".
+
+			  https://www.postgresql.org/message-id/flat/E1Rqxp2-0004Qt-PL%40wrigleys.postgresql.org (BUG #6412)
+			  https://github.com/docker-library/postgres/issues/507
+
+		EOWARN
+	fi
+	if [ -z "$POSTGRES_PASSWORD" ] && [ 'trust' != "$POSTGRES_HOST_AUTH_METHOD" ]; then
+		# The - option suppresses leading tabs but *not* spaces. :)
+		cat >&2 <<-'EOE'
+			Error: Database is uninitialized and superuser password is not specified.
+			       You must specify POSTGRES_PASSWORD to a non-empty value for the
+			       superuser. For example, "-e POSTGRES_PASSWORD=password" on "docker run".
+
+			       You may also use "POSTGRES_HOST_AUTH_METHOD=trust" to allow all
+			       connections without a password. This is *not* recommended.
+
+			       See PostgreSQL documentation about "trust":
+			       https://www.postgresql.org/docs/current/auth-trust.html
+		EOE
+		exit 1
+	fi
+	if [ 'trust' = "$POSTGRES_HOST_AUTH_METHOD" ]; then
+		cat >&2 <<-'EOWARN'
+			********************************************************************************
+			WARNING: POSTGRES_HOST_AUTH_METHOD has been set to "trust". This will allow
+			         anyone with access to the Postgres port to access your database without
+			         a password, even if POSTGRES_PASSWORD is set. See PostgreSQL
+			         documentation about "trust":
+			         https://www.postgresql.org/docs/current/auth-trust.html
+			         In Docker's default configuration, this is effectively any other
+			         container on the same system.
+
+			         It is not recommended to use POSTGRES_HOST_AUTH_METHOD=trust. Replace
+			         it with "-e POSTGRES_PASSWORD=password" instead to set a password in
+			         "docker run".
+			********************************************************************************
+		EOWARN
+	fi
+}
+
+# usage: docker_process_init_files [file [file [...]]]
+#    ie: docker_process_init_files /always-initdb.d/*
+# process initializer files, based on file extensions and permissions
+docker_process_init_files() {
+	# psql here for backwards compatibility "${psql[@]}"
+	psql=( docker_process_sql )
+
+	printf '\n'
+	local f
+	for f; do
+		case "$f" in
+			*.sh)
+				# https://github.com/docker-library/postgres/issues/450#issuecomment-393167936
+				# https://github.com/docker-library/postgres/pull/452
+				if [ -x "$f" ]; then
+					printf '%s: running %s\n' "$0" "$f"
+					"$f"
+				else
+					printf '%s: sourcing %s\n' "$0" "$f"
+					. "$f"
+				fi
+				;;
+			*.sql)     printf '%s: running %s\n' "$0" "$f"; docker_process_sql -f "$f"; printf '\n' ;;
+			*.sql.gz)  printf '%s: running %s\n' "$0" "$f"; gunzip -c "$f" | docker_process_sql; printf '\n' ;;
+			*.sql.xz)  printf '%s: running %s\n' "$0" "$f"; xzcat "$f" | docker_process_sql; printf '\n' ;;
+			*.sql.zst) printf '%s: running %s\n' "$0" "$f"; zstd -dc "$f" | docker_process_sql; printf '\n' ;;
+			*)         printf '%s: ignoring %s\n' "$0" "$f" ;;
+		esac
+		printf '\n'
+	done
+}
+
+# Execute sql script, passed via stdin (or -f flag of pqsl)
+# usage: docker_process_sql [psql-cli-args]
+#    ie: docker_process_sql --dbname=mydb <<<'INSERT ...'
+#    ie: docker_process_sql -f my-file.sql
+#    ie: docker_process_sql <my-file.sql
+docker_process_sql() {
+	local query_runner=( psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --no-password --no-psqlrc )
+	if [ -n "$POSTGRES_DB" ]; then
+		query_runner+=( --dbname "$POSTGRES_DB" )
+	fi
+
+	PGHOST= PGHOSTADDR= "${query_runner[@]}" "$@"
+}
+
+# create initial database
+# uses environment variables for input: POSTGRES_DB
+docker_setup_db() {
+	local dbAlreadyExists
+	dbAlreadyExists="$(
+		POSTGRES_DB= docker_process_sql --dbname postgres --set db="$POSTGRES_DB" --tuples-only <<-'EOSQL'
+			SELECT 1 FROM pg_database WHERE datname = :'db' ;
+		EOSQL
+	)"
+	if [ -z "$dbAlreadyExists" ]; then
+		POSTGRES_DB= docker_process_sql --dbname postgres --set db="$POSTGRES_DB" <<-'EOSQL'
+			CREATE DATABASE :"db" ;
+		EOSQL
+		printf '\n'
+	fi
+}
+
+# Loads various settings that are used elsewhere in the script
+# This should be called before any other functions
+docker_setup_env() {
+	file_env 'POSTGRES_PASSWORD'
+
+	file_env 'POSTGRES_USER' 'postgres'
+	file_env 'POSTGRES_DB' "$POSTGRES_USER"
+	file_env 'POSTGRES_INITDB_ARGS'
+	: "${POSTGRES_HOST_AUTH_METHOD:=}"
+
+	declare -g DATABASE_ALREADY_EXISTS
+	# look specifically for PG_VERSION, as it is expected in the DB dir
+	if [ -s "$PGDATA/PG_VERSION" ]; then
+		DATABASE_ALREADY_EXISTS='true'
+	fi
+}
+
+# append POSTGRES_HOST_AUTH_METHOD to pg_hba.conf for "host" connections
+# all arguments will be passed along as arguments to `postgres` for getting the value of 'password_encryption'
+pg_setup_hba_conf() {
+	# default authentication method is md5 on versions before 14
+	# https://www.postgresql.org/about/news/postgresql-14-released-2318/
+	if [ "$1" = 'postgres' ]; then
+		shift
+	fi
+	local auth
+	# check the default/configured encryption and use that as the auth method
+	auth="$(postgres -C password_encryption "$@")"
+	: "${POSTGRES_HOST_AUTH_METHOD:=$auth}"
+	{
+		printf '\n'
+		if [ 'trust' = "$POSTGRES_HOST_AUTH_METHOD" ]; then
+			printf '# warning trust is enabled for all connections\n'
+			printf '# see https://www.postgresql.org/docs/12/auth-trust.html\n'
+		fi
+		printf 'host all all all %s\n' "$POSTGRES_HOST_AUTH_METHOD"
+	} >> "$PGDATA/pg_hba.conf"
+}
+
+# start socket-only postgresql server for setting up or running scripts
+# all arguments will be passed along as arguments to `postgres` (via pg_ctl)
+docker_temp_server_start() {
+	if [ "$1" = 'postgres' ]; then
+		shift
+	fi
+
+	# internal start of server in order to allow setup using psql client
+	# does not listen on external TCP/IP and waits until start finishes
+	set -- "$@" -c listen_addresses='' -p "${PGPORT:-5432}"
+
+	PGUSER="${PGUSER:-$POSTGRES_USER}" \
+	pg_ctl -D "$PGDATA" \
+		-o "$(printf '%q ' "$@")" \
+		-w start
+}
+
+# stop postgresql server after done setting up user and running scripts
+docker_temp_server_stop() {
+	PGUSER="${PGUSER:-postgres}" \
+	pg_ctl -D "$PGDATA" -m fast -w stop
+}
+
+# check arguments for an option that would cause postgres to stop
+# return true if there is one
+_pg_want_help() {
+	local arg
+	for arg; do
+		case "$arg" in
+			# postgres --help | grep 'then exit'
+			# leaving out -C on purpose since it always fails and is unhelpful:
+			# postgres: could not access the server configuration file "/var/lib/postgresql/data/postgresql.conf": No such file or directory
+			-'?'|--help|--describe-config|-V|--version)
+				return 0
+				;;
+		esac
+	done
+	return 1
+}
+
+_main() {
+	# if first arg looks like a flag, assume we want to run postgres server
+	if [ "${1:0:1}" = '-' ]; then
+		set -- postgres "$@"
+	fi
+
+	if [ "$1" = 'postgres' ] && ! _pg_want_help "$@"; then
+		docker_setup_env
+		# setup data directories and permissions (when run as root)
+		docker_create_db_directories
+		if [ "$(id -u)" = '0' ]; then
+			# then restart script as postgres user
+			exec su-exec postgres "$BASH_SOURCE" "$@"
+		fi
+
+		# only run initialization on an empty data directory
+		if [ -z "$DATABASE_ALREADY_EXISTS" ]; then
+			docker_verify_minimum_env
+
+			# check dir permissions to reduce likelihood of half-initialized database
+			ls /docker-entrypoint-initdb.d/ > /dev/null
+
+			docker_init_database_dir
+			pg_setup_hba_conf "$@"
+
+			# PGPASSWORD is required for psql when authentication is required for 'local' connections via pg_hba.conf and is otherwise harmless
+			# e.g. when '--auth=md5' or '--auth-local=md5' is used in POSTGRES_INITDB_ARGS
+			export PGPASSWORD="${PGPASSWORD:-$POSTGRES_PASSWORD}"
+			docker_temp_server_start "$@"
+
+			docker_setup_db
+			docker_process_init_files /docker-entrypoint-initdb.d/*
+
+			docker_temp_server_stop
+			unset PGPASSWORD
+
+			cat <<-'EOM'
+
+				PostgreSQL init process complete; ready for start up.
+
+			EOM
+		else
+			cat <<-'EOM'
+
+				PostgreSQL Database directory appears to contain a database; Skipping initialization
+
+			EOM
+		fi
+	fi
+
+	exec "$@"
+}
+
+if ! _is_sourced; then
+	_main "$@"
+fi

15/alpine3.17/Dockerfile

@@ -0,0 +1,210 @@
+#
+# NOTE: THIS DOCKERFILE IS GENERATED VIA "apply-templates.sh"
+#
+# PLEASE DO NOT EDIT IT DIRECTLY.
+#
+
+FROM alpine:3.17
+
+# 70 is the standard uid/gid for "postgres" in Alpine
+# https://git.alpinelinux.org/aports/tree/main/postgresql/postgresql.pre-install?h=3.12-stable
+RUN set -eux; \
+	addgroup -g 70 -S postgres; \
+	adduser -u 70 -S -D -G postgres -H -h /var/lib/postgresql -s /bin/sh postgres; \
+	mkdir -p /var/lib/postgresql; \
+	chown -R postgres:postgres /var/lib/postgresql
+
+# su-exec (gosu-compatible) is installed further down
+
+# make the "en_US.UTF-8" locale so postgres will be utf-8 enabled by default
+# alpine doesn't require explicit locale-file generation
+ENV LANG en_US.utf8
+
+RUN mkdir /docker-entrypoint-initdb.d
+
+ENV PG_MAJOR 15
+ENV PG_VERSION 15.3
+ENV PG_SHA256 ffc7d4891f00ffbf5c3f4eab7fbbced8460b8c0ee63c5a5167133b9e6599d932
+
+ENV DOCKER_PG_LLVM_DEPS \
+		llvm15-dev \
+		clang15
+
+RUN set -eux; \
+	\
+	wget -O postgresql.tar.bz2 "https://ftp.postgresql.org/pub/source/v$PG_VERSION/postgresql-$PG_VERSION.tar.bz2"; \
+	echo "$PG_SHA256 *postgresql.tar.bz2" | sha256sum -c -; \
+	mkdir -p /usr/src/postgresql; \
+	tar \
+		--extract \
+		--file postgresql.tar.bz2 \
+		--directory /usr/src/postgresql \
+		--strip-components 1 \
+	; \
+	rm postgresql.tar.bz2; \
+	\
+	apk add --no-cache --virtual .build-deps \
+		$DOCKER_PG_LLVM_DEPS \
+		bison \
+		coreutils \
+		dpkg-dev dpkg \
+		flex \
+		g++ \
+		gcc \
+		krb5-dev \
+		libc-dev \
+		libedit-dev \
+		libxml2-dev \
+		libxslt-dev \
+		linux-headers \
+		make \
+		openldap-dev \
+		openssl-dev \
+		perl-dev \
+		perl-ipc-run \
+		perl-utils \
+		python3-dev \
+		tcl-dev \
+		util-linux-dev \
+		zlib-dev \
+# https://www.postgresql.org/docs/10/static/release-10.html#id-1.11.6.9.5.13
+		icu-dev \
+# https://www.postgresql.org/docs/14/release-14.html#id-1.11.6.5.5.3.7
+		lz4-dev \
+# https://www.postgresql.org/docs/15/release-15.html "--with-zstd to enable Zstandard builds"
+		zstd-dev \
+	; \
+	\
+	cd /usr/src/postgresql; \
+# update "DEFAULT_PGSOCKET_DIR" to "/var/run/postgresql" (matching Debian)
+# see https://anonscm.debian.org/git/pkg-postgresql/postgresql.git/tree/debian/patches/51-default-sockets-in-var.patch?id=8b539fcb3e093a521c095e70bdfa76887217b89f
+	awk '$1 == "#define" && $2 == "DEFAULT_PGSOCKET_DIR" && $3 == "\"/tmp\"" { $3 = "\"/var/run/postgresql\""; print; next } { print }' src/include/pg_config_manual.h > src/include/pg_config_manual.h.new; \
+	grep '/var/run/postgresql' src/include/pg_config_manual.h.new; \
+	mv src/include/pg_config_manual.h.new src/include/pg_config_manual.h; \
+	gnuArch="$(dpkg-architecture --query DEB_BUILD_GNU_TYPE)"; \
+# explicitly update autoconf config.guess and config.sub so they support more arches/libcs
+	wget -O config/config.guess 'https://git.savannah.gnu.org/cgit/config.git/plain/config.guess?id=7d3d27baf8107b630586c962c057e22149653deb'; \
+	wget -O config/config.sub 'https://git.savannah.gnu.org/cgit/config.git/plain/config.sub?id=7d3d27baf8107b630586c962c057e22149653deb'; \
+	\
+# https://git.alpinelinux.org/aports/tree/community/postgresql12/APKBUILD?h=3.18-stable&id=a470294e6d6ca7059e41c54769b7c3c26ec901d4#n158
+	export LLVM_CONFIG="/usr/lib/llvm15/bin/llvm-config"; \
+# https://git.alpinelinux.org/aports/tree/community/postgresql12/APKBUILD?h=3.18-stable&id=a470294e6d6ca7059e41c54769b7c3c26ec901d4#n163
+	export CLANG=clang-15; \
+	\
+# configure options taken from:
+# https://anonscm.debian.org/cgit/pkg-postgresql/postgresql.git/tree/debian/rules?h=9.5
+	./configure \
+		--enable-option-checking=fatal \
+		--build="$gnuArch" \
+# "/usr/src/postgresql/src/backend/access/common/tupconvert.c:105: undefined reference to `libintl_gettext'"
+#		--enable-nls \
+		--enable-integer-datetimes \
+		--enable-thread-safety \
+		--enable-tap-tests \
+# skip debugging info -- we want tiny size instead
+#		--enable-debug \
+		--disable-rpath \
+		--with-uuid=e2fs \
+		--with-gnu-ld \
+		--with-pgport=5432 \
+		--with-system-tzdata=/usr/share/zoneinfo \
+		--prefix=/usr/local \
+		--with-includes=/usr/local/include \
+		--with-libraries=/usr/local/lib \
+		--with-gssapi \
+		--with-ldap \
+		--with-tcl \
+		--with-perl \
+		--with-python \
+#		--with-pam \
+		--with-openssl \
+		--with-libxml \
+		--with-libxslt \
+		--with-icu \
+		--with-llvm \
+		--with-lz4 \
+		--with-zstd \
+	; \
+	make -j "$(nproc)" world; \
+	make install-world; \
+	make -C contrib install; \
+	\
+	runDeps="$( \
+		scanelf --needed --nobanner --format '%n#p' --recursive /usr/local \
+			| tr ',' '\n' \
+			| sort -u \
+			| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
+# Remove plperl, plpython and pltcl dependencies by default to save image size
+# To use the pl extensions, those have to be installed in a derived image
+			| grep -v -e perl -e python -e tcl \
+	)"; \
+	apk add --no-cache --virtual .postgresql-rundeps \
+		$runDeps \
+		bash \
+		su-exec \
+		tzdata \
+		zstd \
+# https://wiki.alpinelinux.org/wiki/Release_Notes_for_Alpine_3.16.0#ICU_data_split
+		icu-data-full \
+# nss_wrapper is not availble on ppc64le: "test case segfaults in ppc64le"
+# https://git.alpinelinux.org/aports/commit/testing/nss_wrapper/APKBUILD?h=3.17-stable&id=94d81ceeb58cff448d489bbcbe9a6d40c9991663
+		$([ "$(apk --print-arch)" != 'ppc64le' ] && echo 'nss_wrapper') \
+	; \
+	apk del --no-network .build-deps; \
+	cd /; \
+	rm -rf \
+		/usr/src/postgresql \
+		/usr/local/share/doc \
+		/usr/local/share/man \
+	; \
+	\
+	postgres --version
+
+# make the sample config easier to munge (and "correct by default")
+RUN set -eux; \
+	cp -v /usr/local/share/postgresql/postgresql.conf.sample /usr/local/share/postgresql/postgresql.conf.sample.orig; \
+	sed -ri "s!^#?(listen_addresses)\s*=\s*\S+.*!\1 = '*'!" /usr/local/share/postgresql/postgresql.conf.sample; \
+	grep -F "listen_addresses = '*'" /usr/local/share/postgresql/postgresql.conf.sample
+
+RUN mkdir -p /var/run/postgresql && chown -R postgres:postgres /var/run/postgresql && chmod 3777 /var/run/postgresql
+
+ENV PGDATA /var/lib/postgresql/data
+# this 777 will be replaced by 700 at runtime (allows semi-arbitrary "--user" values)
+RUN mkdir -p "$PGDATA" && chown -R postgres:postgres "$PGDATA" && chmod 1777 "$PGDATA"
+VOLUME /var/lib/postgresql/data
+
+COPY docker-entrypoint.sh /usr/local/bin/
+ENTRYPOINT ["docker-entrypoint.sh"]
+
+# We set the default STOPSIGNAL to SIGINT, which corresponds to what PostgreSQL
+# calls "Fast Shutdown mode" wherein new connections are disallowed and any
+# in-progress transactions are aborted, allowing PostgreSQL to stop cleanly and
+# flush tables to disk, which is the best compromise available to avoid data
+# corruption.
+#
+# Users who know their applications do not keep open long-lived idle connections
+# may way to use a value of SIGTERM instead, which corresponds to "Smart
+# Shutdown mode" in which any existing sessions are allowed to finish and the
+# server stops when all sessions are terminated.
+#
+# See https://www.postgresql.org/docs/12/server-shutdown.html for more details
+# about available PostgreSQL server shutdown signals.
+#
+# See also https://www.postgresql.org/docs/12/server-start.html for further
+# justification of this as the default value, namely that the example (and
+# shipped) systemd service files use the "Fast Shutdown mode" for service
+# termination.
+#
+STOPSIGNAL SIGINT
+#
+# An additional setting that is recommended for all users regardless of this
+# value is the runtime "--stop-timeout" (or your orchestrator/runtime's
+# equivalent) for controlling how long to wait between sending the defined
+# STOPSIGNAL and sending SIGKILL (which is likely to cause data corruption).
+#
+# The default in most runtimes (such as Docker) is 10 seconds, and the
+# documentation at https://www.postgresql.org/docs/12/server-start.html notes
+# that even 90 seconds may not be long enough in many instances.
+
+EXPOSE 5432
+CMD ["postgres"]

15/alpine3.17/docker-entrypoint.sh

@@ -0,0 +1,351 @@
+#!/usr/bin/env bash
+set -Eeo pipefail
+# TODO swap to -Eeuo pipefail above (after handling all potentially-unset variables)
+
+# usage: file_env VAR [DEFAULT]
+#    ie: file_env 'XYZ_DB_PASSWORD' 'example'
+# (will allow for "$XYZ_DB_PASSWORD_FILE" to fill in the value of
+#  "$XYZ_DB_PASSWORD" from a file, especially for Docker's secrets feature)
+file_env() {
+	local var="$1"
+	local fileVar="${var}_FILE"
+	local def="${2:-}"
+	if [ "${!var:-}" ] && [ "${!fileVar:-}" ]; then
+		printf >&2 'error: both %s and %s are set (but are exclusive)\n' "$var" "$fileVar"
+		exit 1
+	fi
+	local val="$def"
+	if [ "${!var:-}" ]; then
+		val="${!var}"
+	elif [ "${!fileVar:-}" ]; then
+		val="$(< "${!fileVar}")"
+	fi
+	export "$var"="$val"
+	unset "$fileVar"
+}
+
+# check to see if this file is being run or sourced from another script
+_is_sourced() {
+	# https://unix.stackexchange.com/a/215279
+	[ "${#FUNCNAME[@]}" -ge 2 ] \
+		&& [ "${FUNCNAME[0]}" = '_is_sourced' ] \
+		&& [ "${FUNCNAME[1]}" = 'source' ]
+}
+
+# used to create initial postgres directories and if run as root, ensure ownership to the "postgres" user
+docker_create_db_directories() {
+	local user; user="$(id -u)"
+
+	mkdir -p "$PGDATA"
+	# ignore failure since there are cases where we can't chmod (and PostgreSQL might fail later anyhow - it's picky about permissions of this directory)
+	chmod 00700 "$PGDATA" || :
+
+	# ignore failure since it will be fine when using the image provided directory; see also https://github.com/docker-library/postgres/pull/289
+	mkdir -p /var/run/postgresql || :
+	chmod 03775 /var/run/postgresql || :
+
+	# Create the transaction log directory before initdb is run so the directory is owned by the correct user
+	if [ -n "${POSTGRES_INITDB_WALDIR:-}" ]; then
+		mkdir -p "$POSTGRES_INITDB_WALDIR"
+		if [ "$user" = '0' ]; then
+			find "$POSTGRES_INITDB_WALDIR" \! -user postgres -exec chown postgres '{}' +
+		fi
+		chmod 700 "$POSTGRES_INITDB_WALDIR"
+	fi
+
+	# allow the container to be started with `--user`
+	if [ "$user" = '0' ]; then
+		find "$PGDATA" \! -user postgres -exec chown postgres '{}' +
+		find /var/run/postgresql \! -user postgres -exec chown postgres '{}' +
+	fi
+}
+
+# initialize empty PGDATA directory with new database via 'initdb'
+# arguments to `initdb` can be passed via POSTGRES_INITDB_ARGS or as arguments to this function
+# `initdb` automatically creates the "postgres", "template0", and "template1" dbnames
+# this is also where the database user is created, specified by `POSTGRES_USER` env
+docker_init_database_dir() {
+	# "initdb" is particular about the current user existing in "/etc/passwd", so we use "nss_wrapper" to fake that if necessary
+	# see https://github.com/docker-library/postgres/pull/253, https://github.com/docker-library/postgres/issues/359, https://cwrap.org/nss_wrapper.html
+	local uid; uid="$(id -u)"
+	if ! getent passwd "$uid" &> /dev/null; then
+		# see if we can find a suitable "libnss_wrapper.so" (https://salsa.debian.org/sssd-team/nss-wrapper/-/commit/b9925a653a54e24d09d9b498a2d913729f7abb15)
+		local wrapper
+		for wrapper in {/usr,}/lib{/*,}/libnss_wrapper.so; do
+			if [ -s "$wrapper" ]; then
+				NSS_WRAPPER_PASSWD="$(mktemp)"
+				NSS_WRAPPER_GROUP="$(mktemp)"
+				export LD_PRELOAD="$wrapper" NSS_WRAPPER_PASSWD NSS_WRAPPER_GROUP
+				local gid; gid="$(id -g)"
+				printf 'postgres:x:%s:%s:PostgreSQL:%s:/bin/false\n' "$uid" "$gid" "$PGDATA" > "$NSS_WRAPPER_PASSWD"
+				printf 'postgres:x:%s:\n' "$gid" > "$NSS_WRAPPER_GROUP"
+				break
+			fi
+		done
+	fi
+
+	if [ -n "${POSTGRES_INITDB_WALDIR:-}" ]; then
+		set -- --waldir "$POSTGRES_INITDB_WALDIR" "$@"
+	fi
+
+	# --pwfile refuses to handle a properly-empty file (hence the "\n"): https://github.com/docker-library/postgres/issues/1025
+	eval 'initdb --username="$POSTGRES_USER" --pwfile=<(printf "%s\n" "$POSTGRES_PASSWORD") '"$POSTGRES_INITDB_ARGS"' "$@"'
+
+	# unset/cleanup "nss_wrapper" bits
+	if [[ "${LD_PRELOAD:-}" == */libnss_wrapper.so ]]; then
+		rm -f "$NSS_WRAPPER_PASSWD" "$NSS_WRAPPER_GROUP"
+		unset LD_PRELOAD NSS_WRAPPER_PASSWD NSS_WRAPPER_GROUP
+	fi
+}
+
+# print large warning if POSTGRES_PASSWORD is long
+# error if both POSTGRES_PASSWORD is empty and POSTGRES_HOST_AUTH_METHOD is not 'trust'
+# print large warning if POSTGRES_HOST_AUTH_METHOD is set to 'trust'
+# assumes database is not set up, ie: [ -z "$DATABASE_ALREADY_EXISTS" ]
+docker_verify_minimum_env() {
+	# check password first so we can output the warning before postgres
+	# messes it up
+	if [ "${#POSTGRES_PASSWORD}" -ge 100 ]; then
+		cat >&2 <<-'EOWARN'
+
+			WARNING: The supplied POSTGRES_PASSWORD is 100+ characters.
+
+			  This will not work if used via PGPASSWORD with "psql".
+
+			  https://www.postgresql.org/message-id/flat/E1Rqxp2-0004Qt-PL%40wrigleys.postgresql.org (BUG #6412)
+			  https://github.com/docker-library/postgres/issues/507
+
+		EOWARN
+	fi
+	if [ -z "$POSTGRES_PASSWORD" ] && [ 'trust' != "$POSTGRES_HOST_AUTH_METHOD" ]; then
+		# The - option suppresses leading tabs but *not* spaces. :)
+		cat >&2 <<-'EOE'
+			Error: Database is uninitialized and superuser password is not specified.
+			       You must specify POSTGRES_PASSWORD to a non-empty value for the
+			       superuser. For example, "-e POSTGRES_PASSWORD=password" on "docker run".
+
+			       You may also use "POSTGRES_HOST_AUTH_METHOD=trust" to allow all
+			       connections without a password. This is *not* recommended.
+
+			       See PostgreSQL documentation about "trust":
+			       https://www.postgresql.org/docs/current/auth-trust.html
+		EOE
+		exit 1
+	fi
+	if [ 'trust' = "$POSTGRES_HOST_AUTH_METHOD" ]; then
+		cat >&2 <<-'EOWARN'
+			********************************************************************************
+			WARNING: POSTGRES_HOST_AUTH_METHOD has been set to "trust". This will allow
+			         anyone with access to the Postgres port to access your database without
+			         a password, even if POSTGRES_PASSWORD is set. See PostgreSQL
+			         documentation about "trust":
+			         https://www.postgresql.org/docs/current/auth-trust.html
+			         In Docker's default configuration, this is effectively any other
+			         container on the same system.
+
+			         It is not recommended to use POSTGRES_HOST_AUTH_METHOD=trust. Replace
+			         it with "-e POSTGRES_PASSWORD=password" instead to set a password in
+			         "docker run".
+			********************************************************************************
+		EOWARN
+	fi
+}
+
+# usage: docker_process_init_files [file [file [...]]]
+#    ie: docker_process_init_files /always-initdb.d/*
+# process initializer files, based on file extensions and permissions
+docker_process_init_files() {
+	# psql here for backwards compatibility "${psql[@]}"
+	psql=( docker_process_sql )
+
+	printf '\n'
+	local f
+	for f; do
+		case "$f" in
+			*.sh)
+				# https://github.com/docker-library/postgres/issues/450#issuecomment-393167936
+				# https://github.com/docker-library/postgres/pull/452
+				if [ -x "$f" ]; then
+					printf '%s: running %s\n' "$0" "$f"
+					"$f"
+				else
+					printf '%s: sourcing %s\n' "$0" "$f"
+					. "$f"
+				fi
+				;;
+			*.sql)     printf '%s: running %s\n' "$0" "$f"; docker_process_sql -f "$f"; printf '\n' ;;
+			*.sql.gz)  printf '%s: running %s\n' "$0" "$f"; gunzip -c "$f" | docker_process_sql; printf '\n' ;;
+			*.sql.xz)  printf '%s: running %s\n' "$0" "$f"; xzcat "$f" | docker_process_sql; printf '\n' ;;
+			*.sql.zst) printf '%s: running %s\n' "$0" "$f"; zstd -dc "$f" | docker_process_sql; printf '\n' ;;
+			*)         printf '%s: ignoring %s\n' "$0" "$f" ;;
+		esac
+		printf '\n'
+	done
+}
+
+# Execute sql script, passed via stdin (or -f flag of pqsl)
+# usage: docker_process_sql [psql-cli-args]
+#    ie: docker_process_sql --dbname=mydb <<<'INSERT ...'
+#    ie: docker_process_sql -f my-file.sql
+#    ie: docker_process_sql <my-file.sql
+docker_process_sql() {
+	local query_runner=( psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --no-password --no-psqlrc )
+	if [ -n "$POSTGRES_DB" ]; then
+		query_runner+=( --dbname "$POSTGRES_DB" )
+	fi
+
+	PGHOST= PGHOSTADDR= "${query_runner[@]}" "$@"
+}
+
+# create initial database
+# uses environment variables for input: POSTGRES_DB
+docker_setup_db() {
+	local dbAlreadyExists
+	dbAlreadyExists="$(
+		POSTGRES_DB= docker_process_sql --dbname postgres --set db="$POSTGRES_DB" --tuples-only <<-'EOSQL'
+			SELECT 1 FROM pg_database WHERE datname = :'db' ;
+		EOSQL
+	)"
+	if [ -z "$dbAlreadyExists" ]; then
+		POSTGRES_DB= docker_process_sql --dbname postgres --set db="$POSTGRES_DB" <<-'EOSQL'
+			CREATE DATABASE :"db" ;
+		EOSQL
+		printf '\n'
+	fi
+}
+
+# Loads various settings that are used elsewhere in the script
+# This should be called before any other functions
+docker_setup_env() {
+	file_env 'POSTGRES_PASSWORD'
+
+	file_env 'POSTGRES_USER' 'postgres'
+	file_env 'POSTGRES_DB' "$POSTGRES_USER"
+	file_env 'POSTGRES_INITDB_ARGS'
+	: "${POSTGRES_HOST_AUTH_METHOD:=}"
+
+	declare -g DATABASE_ALREADY_EXISTS
+	# look specifically for PG_VERSION, as it is expected in the DB dir
+	if [ -s "$PGDATA/PG_VERSION" ]; then
+		DATABASE_ALREADY_EXISTS='true'
+	fi
+}
+
+# append POSTGRES_HOST_AUTH_METHOD to pg_hba.conf for "host" connections
+# all arguments will be passed along as arguments to `postgres` for getting the value of 'password_encryption'
+pg_setup_hba_conf() {
+	# default authentication method is md5 on versions before 14
+	# https://www.postgresql.org/about/news/postgresql-14-released-2318/
+	if [ "$1" = 'postgres' ]; then
+		shift
+	fi
+	local auth
+	# check the default/configured encryption and use that as the auth method
+	auth="$(postgres -C password_encryption "$@")"
+	: "${POSTGRES_HOST_AUTH_METHOD:=$auth}"
+	{
+		printf '\n'
+		if [ 'trust' = "$POSTGRES_HOST_AUTH_METHOD" ]; then
+			printf '# warning trust is enabled for all connections\n'
+			printf '# see https://www.postgresql.org/docs/12/auth-trust.html\n'
+		fi
+		printf 'host all all all %s\n' "$POSTGRES_HOST_AUTH_METHOD"
+	} >> "$PGDATA/pg_hba.conf"
+}
+
+# start socket-only postgresql server for setting up or running scripts
+# all arguments will be passed along as arguments to `postgres` (via pg_ctl)
+docker_temp_server_start() {
+	if [ "$1" = 'postgres' ]; then
+		shift
+	fi
+
+	# internal start of server in order to allow setup using psql client
+	# does not listen on external TCP/IP and waits until start finishes
+	set -- "$@" -c listen_addresses='' -p "${PGPORT:-5432}"
+
+	PGUSER="${PGUSER:-$POSTGRES_USER}" \
+	pg_ctl -D "$PGDATA" \
+		-o "$(printf '%q ' "$@")" \
+		-w start
+}
+
+# stop postgresql server after done setting up user and running scripts
+docker_temp_server_stop() {
+	PGUSER="${PGUSER:-postgres}" \
+	pg_ctl -D "$PGDATA" -m fast -w stop
+}
+
+# check arguments for an option that would cause postgres to stop
+# return true if there is one
+_pg_want_help() {
+	local arg
+	for arg; do
+		case "$arg" in
+			# postgres --help | grep 'then exit'
+			# leaving out -C on purpose since it always fails and is unhelpful:
+			# postgres: could not access the server configuration file "/var/lib/postgresql/data/postgresql.conf": No such file or directory
+			-'?'|--help|--describe-config|-V|--version)
+				return 0
+				;;
+		esac
+	done
+	return 1
+}
+
+_main() {
+	# if first arg looks like a flag, assume we want to run postgres server
+	if [ "${1:0:1}" = '-' ]; then
+		set -- postgres "$@"
+	fi
+
+	if [ "$1" = 'postgres' ] && ! _pg_want_help "$@"; then
+		docker_setup_env
+		# setup data directories and permissions (when run as root)
+		docker_create_db_directories
+		if [ "$(id -u)" = '0' ]; then
+			# then restart script as postgres user
+			exec su-exec postgres "$BASH_SOURCE" "$@"
+		fi
+
+		# only run initialization on an empty data directory
+		if [ -z "$DATABASE_ALREADY_EXISTS" ]; then
+			docker_verify_minimum_env
+
+			# check dir permissions to reduce likelihood of half-initialized database
+			ls /docker-entrypoint-initdb.d/ > /dev/null
+
+			docker_init_database_dir
+			pg_setup_hba_conf "$@"
+
+			# PGPASSWORD is required for psql when authentication is required for 'local' connections via pg_hba.conf and is otherwise harmless
+			# e.g. when '--auth=md5' or '--auth-local=md5' is used in POSTGRES_INITDB_ARGS
+			export PGPASSWORD="${PGPASSWORD:-$POSTGRES_PASSWORD}"
+			docker_temp_server_start "$@"
+
+			docker_setup_db
+			docker_process_init_files /docker-entrypoint-initdb.d/*
+
+			docker_temp_server_stop
+			unset PGPASSWORD
+
+			cat <<-'EOM'
+
+				PostgreSQL init process complete; ready for start up.
+
+			EOM
+		else
+			cat <<-'EOM'
+
+				PostgreSQL Database directory appears to contain a database; Skipping initialization
+
+			EOM
+		fi
+	fi
+
+	exec "$@"
+}
+
+if ! _is_sourced; then
+	_main "$@"
+fi

15/alpine3.18/docker-entrypoint.sh

@@ -0,0 +1,351 @@
+#!/usr/bin/env bash
+set -Eeo pipefail
+# TODO swap to -Eeuo pipefail above (after handling all potentially-unset variables)
+
+# usage: file_env VAR [DEFAULT]
+#    ie: file_env 'XYZ_DB_PASSWORD' 'example'
+# (will allow for "$XYZ_DB_PASSWORD_FILE" to fill in the value of
+#  "$XYZ_DB_PASSWORD" from a file, especially for Docker's secrets feature)
+file_env() {
+	local var="$1"
+	local fileVar="${var}_FILE"
+	local def="${2:-}"
+	if [ "${!var:-}" ] && [ "${!fileVar:-}" ]; then
+		printf >&2 'error: both %s and %s are set (but are exclusive)\n' "$var" "$fileVar"
+		exit 1
+	fi
+	local val="$def"
+	if [ "${!var:-}" ]; then
+		val="${!var}"
+	elif [ "${!fileVar:-}" ]; then
+		val="$(< "${!fileVar}")"
+	fi
+	export "$var"="$val"
+	unset "$fileVar"
+}
+
+# check to see if this file is being run or sourced from another script
+_is_sourced() {
+	# https://unix.stackexchange.com/a/215279
+	[ "${#FUNCNAME[@]}" -ge 2 ] \
+		&& [ "${FUNCNAME[0]}" = '_is_sourced' ] \
+		&& [ "${FUNCNAME[1]}" = 'source' ]
+}
+
+# used to create initial postgres directories and if run as root, ensure ownership to the "postgres" user
+docker_create_db_directories() {
+	local user; user="$(id -u)"
+
+	mkdir -p "$PGDATA"
+	# ignore failure since there are cases where we can't chmod (and PostgreSQL might fail later anyhow - it's picky about permissions of this directory)
+	chmod 00700 "$PGDATA" || :
+
+	# ignore failure since it will be fine when using the image provided directory; see also https://github.com/docker-library/postgres/pull/289
+	mkdir -p /var/run/postgresql || :
+	chmod 03775 /var/run/postgresql || :
+
+	# Create the transaction log directory before initdb is run so the directory is owned by the correct user
+	if [ -n "${POSTGRES_INITDB_WALDIR:-}" ]; then
+		mkdir -p "$POSTGRES_INITDB_WALDIR"
+		if [ "$user" = '0' ]; then
+			find "$POSTGRES_INITDB_WALDIR" \! -user postgres -exec chown postgres '{}' +
+		fi
+		chmod 700 "$POSTGRES_INITDB_WALDIR"
+	fi
+
+	# allow the container to be started with `--user`
+	if [ "$user" = '0' ]; then
+		find "$PGDATA" \! -user postgres -exec chown postgres '{}' +
+		find /var/run/postgresql \! -user postgres -exec chown postgres '{}' +
+	fi
+}
+
+# initialize empty PGDATA directory with new database via 'initdb'
+# arguments to `initdb` can be passed via POSTGRES_INITDB_ARGS or as arguments to this function
+# `initdb` automatically creates the "postgres", "template0", and "template1" dbnames
+# this is also where the database user is created, specified by `POSTGRES_USER` env
+docker_init_database_dir() {
+	# "initdb" is particular about the current user existing in "/etc/passwd", so we use "nss_wrapper" to fake that if necessary
+	# see https://github.com/docker-library/postgres/pull/253, https://github.com/docker-library/postgres/issues/359, https://cwrap.org/nss_wrapper.html
+	local uid; uid="$(id -u)"
+	if ! getent passwd "$uid" &> /dev/null; then
+		# see if we can find a suitable "libnss_wrapper.so" (https://salsa.debian.org/sssd-team/nss-wrapper/-/commit/b9925a653a54e24d09d9b498a2d913729f7abb15)
+		local wrapper
+		for wrapper in {/usr,}/lib{/*,}/libnss_wrapper.so; do
+			if [ -s "$wrapper" ]; then
+				NSS_WRAPPER_PASSWD="$(mktemp)"
+				NSS_WRAPPER_GROUP="$(mktemp)"
+				export LD_PRELOAD="$wrapper" NSS_WRAPPER_PASSWD NSS_WRAPPER_GROUP
+				local gid; gid="$(id -g)"
+				printf 'postgres:x:%s:%s:PostgreSQL:%s:/bin/false\n' "$uid" "$gid" "$PGDATA" > "$NSS_WRAPPER_PASSWD"
+				printf 'postgres:x:%s:\n' "$gid" > "$NSS_WRAPPER_GROUP"
+				break
+			fi
+		done
+	fi
+
+	if [ -n "${POSTGRES_INITDB_WALDIR:-}" ]; then
+		set -- --waldir "$POSTGRES_INITDB_WALDIR" "$@"
+	fi
+
+	# --pwfile refuses to handle a properly-empty file (hence the "\n"): https://github.com/docker-library/postgres/issues/1025
+	eval 'initdb --username="$POSTGRES_USER" --pwfile=<(printf "%s\n" "$POSTGRES_PASSWORD") '"$POSTGRES_INITDB_ARGS"' "$@"'
+
+	# unset/cleanup "nss_wrapper" bits
+	if [[ "${LD_PRELOAD:-}" == */libnss_wrapper.so ]]; then
+		rm -f "$NSS_WRAPPER_PASSWD" "$NSS_WRAPPER_GROUP"
+		unset LD_PRELOAD NSS_WRAPPER_PASSWD NSS_WRAPPER_GROUP
+	fi
+}
+
+# print large warning if POSTGRES_PASSWORD is long
+# error if both POSTGRES_PASSWORD is empty and POSTGRES_HOST_AUTH_METHOD is not 'trust'
+# print large warning if POSTGRES_HOST_AUTH_METHOD is set to 'trust'
+# assumes database is not set up, ie: [ -z "$DATABASE_ALREADY_EXISTS" ]
+docker_verify_minimum_env() {
+	# check password first so we can output the warning before postgres
+	# messes it up
+	if [ "${#POSTGRES_PASSWORD}" -ge 100 ]; then
+		cat >&2 <<-'EOWARN'
+
+			WARNING: The supplied POSTGRES_PASSWORD is 100+ characters.
+
+			  This will not work if used via PGPASSWORD with "psql".
+
+			  https://www.postgresql.org/message-id/flat/E1Rqxp2-0004Qt-PL%40wrigleys.postgresql.org (BUG #6412)
+			  https://github.com/docker-library/postgres/issues/507
+
+		EOWARN
+	fi
+	if [ -z "$POSTGRES_PASSWORD" ] && [ 'trust' != "$POSTGRES_HOST_AUTH_METHOD" ]; then
+		# The - option suppresses leading tabs but *not* spaces. :)
+		cat >&2 <<-'EOE'
+			Error: Database is uninitialized and superuser password is not specified.
+			       You must specify POSTGRES_PASSWORD to a non-empty value for the
+			       superuser. For example, "-e POSTGRES_PASSWORD=password" on "docker run".
+
+			       You may also use "POSTGRES_HOST_AUTH_METHOD=trust" to allow all
+			       connections without a password. This is *not* recommended.
+
+			       See PostgreSQL documentation about "trust":
+			       https://www.postgresql.org/docs/current/auth-trust.html
+		EOE
+		exit 1
+	fi
+	if [ 'trust' = "$POSTGRES_HOST_AUTH_METHOD" ]; then
+		cat >&2 <<-'EOWARN'
+			********************************************************************************
+			WARNING: POSTGRES_HOST_AUTH_METHOD has been set to "trust". This will allow
+			         anyone with access to the Postgres port to access your database without
+			         a password, even if POSTGRES_PASSWORD is set. See PostgreSQL
+			         documentation about "trust":
+			         https://www.postgresql.org/docs/current/auth-trust.html
+			         In Docker's default configuration, this is effectively any other
+			         container on the same system.
+
+			         It is not recommended to use POSTGRES_HOST_AUTH_METHOD=trust. Replace
+			         it with "-e POSTGRES_PASSWORD=password" instead to set a password in
+			         "docker run".
+			********************************************************************************
+		EOWARN
+	fi
+}
+
+# usage: docker_process_init_files [file [file [...]]]
+#    ie: docker_process_init_files /always-initdb.d/*
+# process initializer files, based on file extensions and permissions
+docker_process_init_files() {
+	# psql here for backwards compatibility "${psql[@]}"
+	psql=( docker_process_sql )
+
+	printf '\n'
+	local f
+	for f; do
+		case "$f" in
+			*.sh)
+				# https://github.com/docker-library/postgres/issues/450#issuecomment-393167936
+				# https://github.com/docker-library/postgres/pull/452
+				if [ -x "$f" ]; then
+					printf '%s: running %s\n' "$0" "$f"
+					"$f"
+				else
+					printf '%s: sourcing %s\n' "$0" "$f"
+					. "$f"
+				fi
+				;;
+			*.sql)     printf '%s: running %s\n' "$0" "$f"; docker_process_sql -f "$f"; printf '\n' ;;
+			*.sql.gz)  printf '%s: running %s\n' "$0" "$f"; gunzip -c "$f" | docker_process_sql; printf '\n' ;;
+			*.sql.xz)  printf '%s: running %s\n' "$0" "$f"; xzcat "$f" | docker_process_sql; printf '\n' ;;
+			*.sql.zst) printf '%s: running %s\n' "$0" "$f"; zstd -dc "$f" | docker_process_sql; printf '\n' ;;
+			*)         printf '%s: ignoring %s\n' "$0" "$f" ;;
+		esac
+		printf '\n'
+	done
+}
+
+# Execute sql script, passed via stdin (or -f flag of pqsl)
+# usage: docker_process_sql [psql-cli-args]
+#    ie: docker_process_sql --dbname=mydb <<<'INSERT ...'
+#    ie: docker_process_sql -f my-file.sql
+#    ie: docker_process_sql <my-file.sql
+docker_process_sql() {
+	local query_runner=( psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --no-password --no-psqlrc )
+	if [ -n "$POSTGRES_DB" ]; then
+		query_runner+=( --dbname "$POSTGRES_DB" )
+	fi
+
+	PGHOST= PGHOSTADDR= "${query_runner[@]}" "$@"
+}
+
+# create initial database
+# uses environment variables for input: POSTGRES_DB
+docker_setup_db() {
+	local dbAlreadyExists
+	dbAlreadyExists="$(
+		POSTGRES_DB= docker_process_sql --dbname postgres --set db="$POSTGRES_DB" --tuples-only <<-'EOSQL'
+			SELECT 1 FROM pg_database WHERE datname = :'db' ;
+		EOSQL
+	)"
+	if [ -z "$dbAlreadyExists" ]; then
+		POSTGRES_DB= docker_process_sql --dbname postgres --set db="$POSTGRES_DB" <<-'EOSQL'
+			CREATE DATABASE :"db" ;
+		EOSQL
+		printf '\n'
+	fi
+}
+
+# Loads various settings that are used elsewhere in the script
+# This should be called before any other functions
+docker_setup_env() {
+	file_env 'POSTGRES_PASSWORD'
+
+	file_env 'POSTGRES_USER' 'postgres'
+	file_env 'POSTGRES_DB' "$POSTGRES_USER"
+	file_env 'POSTGRES_INITDB_ARGS'
+	: "${POSTGRES_HOST_AUTH_METHOD:=}"
+
+	declare -g DATABASE_ALREADY_EXISTS
+	# look specifically for PG_VERSION, as it is expected in the DB dir
+	if [ -s "$PGDATA/PG_VERSION" ]; then
+		DATABASE_ALREADY_EXISTS='true'
+	fi
+}
+
+# append POSTGRES_HOST_AUTH_METHOD to pg_hba.conf for "host" connections
+# all arguments will be passed along as arguments to `postgres` for getting the value of 'password_encryption'
+pg_setup_hba_conf() {
+	# default authentication method is md5 on versions before 14
+	# https://www.postgresql.org/about/news/postgresql-14-released-2318/
+	if [ "$1" = 'postgres' ]; then
+		shift
+	fi
+	local auth
+	# check the default/configured encryption and use that as the auth method
+	auth="$(postgres -C password_encryption "$@")"
+	: "${POSTGRES_HOST_AUTH_METHOD:=$auth}"
+	{
+		printf '\n'
+		if [ 'trust' = "$POSTGRES_HOST_AUTH_METHOD" ]; then
+			printf '# warning trust is enabled for all connections\n'
+			printf '# see https://www.postgresql.org/docs/12/auth-trust.html\n'
+		fi
+		printf 'host all all all %s\n' "$POSTGRES_HOST_AUTH_METHOD"
+	} >> "$PGDATA/pg_hba.conf"
+}
+
+# start socket-only postgresql server for setting up or running scripts
+# all arguments will be passed along as arguments to `postgres` (via pg_ctl)
+docker_temp_server_start() {
+	if [ "$1" = 'postgres' ]; then
+		shift
+	fi
+
+	# internal start of server in order to allow setup using psql client
+	# does not listen on external TCP/IP and waits until start finishes
+	set -- "$@" -c listen_addresses='' -p "${PGPORT:-5432}"
+
+	PGUSER="${PGUSER:-$POSTGRES_USER}" \
+	pg_ctl -D "$PGDATA" \
+		-o "$(printf '%q ' "$@")" \
+		-w start
+}
+
+# stop postgresql server after done setting up user and running scripts
+docker_temp_server_stop() {
+	PGUSER="${PGUSER:-postgres}" \
+	pg_ctl -D "$PGDATA" -m fast -w stop
+}
+
+# check arguments for an option that would cause postgres to stop
+# return true if there is one
+_pg_want_help() {
+	local arg
+	for arg; do
+		case "$arg" in
+			# postgres --help | grep 'then exit'
+			# leaving out -C on purpose since it always fails and is unhelpful:
+			# postgres: could not access the server configuration file "/var/lib/postgresql/data/postgresql.conf": No such file or directory
+			-'?'|--help|--describe-config|-V|--version)
+				return 0
+				;;
+		esac
+	done
+	return 1
+}
+
+_main() {
+	# if first arg looks like a flag, assume we want to run postgres server
+	if [ "${1:0:1}" = '-' ]; then
+		set -- postgres "$@"
+	fi
+
+	if [ "$1" = 'postgres' ] && ! _pg_want_help "$@"; then
+		docker_setup_env
+		# setup data directories and permissions (when run as root)
+		docker_create_db_directories
+		if [ "$(id -u)" = '0' ]; then
+			# then restart script as postgres user
+			exec su-exec postgres "$BASH_SOURCE" "$@"
+		fi
+
+		# only run initialization on an empty data directory
+		if [ -z "$DATABASE_ALREADY_EXISTS" ]; then
+			docker_verify_minimum_env
+
+			# check dir permissions to reduce likelihood of half-initialized database
+			ls /docker-entrypoint-initdb.d/ > /dev/null
+
+			docker_init_database_dir
+			pg_setup_hba_conf "$@"
+
+			# PGPASSWORD is required for psql when authentication is required for 'local' connections via pg_hba.conf and is otherwise harmless
+			# e.g. when '--auth=md5' or '--auth-local=md5' is used in POSTGRES_INITDB_ARGS
+			export PGPASSWORD="${PGPASSWORD:-$POSTGRES_PASSWORD}"
+			docker_temp_server_start "$@"
+
+			docker_setup_db
+			docker_process_init_files /docker-entrypoint-initdb.d/*
+
+			docker_temp_server_stop
+			unset PGPASSWORD
+
+			cat <<-'EOM'
+
+				PostgreSQL init process complete; ready for start up.
+
+			EOM
+		else
+			cat <<-'EOM'
+
+				PostgreSQL Database directory appears to contain a database; Skipping initialization
+
+			EOM
+		fi
+	fi
+
+	exec "$@"
+}
+
+if ! _is_sourced; then
+	_main "$@"
+fi

Dockerfile-alpine.template

@@ -1,4 +1,4 @@
-FROM alpine:{{ .alpine }}
+FROM alpine:{{ env.variant | ltrimstr("alpine") }}
 
 # 70 is the standard uid/gid for "postgres" in Alpine
 # https://git.alpinelinux.org/aports/tree/main/postgresql/postgresql.pre-install?h=3.12-stable

apply-templates.sh

@@ -34,7 +34,7 @@ for version; do
 
 	major="$(jq -r '.[env.version].major' versions.json)"
 
-	variants="$(jq -r '.[env.version].debianSuites + ["alpine"] | map(@sh) | join(" ")' versions.json)"
+	variants="$(jq -r '.[env.version].variants | map(@sh) | join(" ")' versions.json)"
 	eval "variants=( $variants )"
 
 	rm -rf "$version"
@@ -47,19 +47,21 @@ for version; do
 
 		echo "processing $dir ..."
 
-		if [ "$variant" = 'alpine' ]; then
+		cp -a docker-entrypoint.sh "$dir/"
-			template='Dockerfile-alpine.template'
+
-		else
+		case "$variant" in
-			template='Dockerfile-debian.template'
+			alpine*)
-		fi
+				template='Dockerfile-alpine.template'
+				sed -i -e 's/gosu/su-exec/g' "$dir/docker-entrypoint.sh"
+				;;
+			*)
+				template='Dockerfile-debian.template'
+				;;
+		esac
+
 		{
 			generated_warning
 			gawk -f "$jqt" "$template"
 		} > "$dir/Dockerfile"
-
-		cp -a docker-entrypoint.sh "$dir/"
-		if [ "$variant" = 'alpine' ]; then
-			sed -i -e 's/gosu/su-exec/g' "$dir/docker-entrypoint.sh"
-		fi
 	done
 done

generate-stackbrew-library.sh

@@ -76,9 +76,10 @@ join() {
 for version; do
 	export version
 
-	variants="$(jq -r '.[env.version].debianSuites + ["alpine"] | map(@sh) | join(" ")' versions.json)"
+	variants="$(jq -r '.[env.version].variants | map(@sh) | join(" ")' versions.json)"
 	eval "variants=( $variants )"
 
+	alpine="$(jq -r '.[env.version].alpine' versions.json)"
 	debian="$(jq -r '.[env.version].debian' versions.json)"
 
 	fullVersion="$(jq -r '.[env.version].version' versions.json)"
@@ -115,9 +116,8 @@ for version; do
 					"${variantAliases[@]}"
 				)
 				;;
-			alpine)
+			alpine"$alpine")
-				alpine="alpine${parent#*:}"
+				variantAliases+=( "${versionAliases[@]/%/-alpine}" )
-				variantAliases+=( "${versionAliases[@]/%/-$alpine}" )
 				variantAliases=( "${variantAliases[@]//latest-/}" )
 				;;
 		esac

versions.json

@@ -11,11 +11,13 @@
       "version": "11.20-1.pgdg110+1"
     },
     "debian": "",
-    "debianSuites": [
-      "bullseye"
-    ],
     "major": 11,
     "sha256": "3d7c8882f64a7e98534a044257dfee7abad77a5b7da12508d85d722b98b5acce",
+    "variants": [
+      "bullseye",
+      "alpine3.18",
+      "alpine3.17"
+    ],
     "version": "11.20"
   },
   "12": {
@@ -30,11 +32,13 @@
       "version": "12.15-1.pgdg110+1"
     },
     "debian": "bullseye",
-    "debianSuites": [
-      "bullseye"
-    ],
     "major": 12,
     "sha256": "bb5206e2864c1c4579938b96ea6096d155f22abf2d2cc2aa57571e3c4cb12b36",
+    "variants": [
+      "bullseye",
+      "alpine3.18",
+      "alpine3.17"
+    ],
     "version": "12.15"
   },
   "13": {
@@ -49,11 +53,13 @@
       "version": "13.11-1.pgdg110+1"
     },
     "debian": "bullseye",
-    "debianSuites": [
-      "bullseye"
-    ],
     "major": 13,
     "sha256": "4992ff647203566b670d4e54dc5317499a26856c93576d0ea951bdf6bee50bfb",
+    "variants": [
+      "bullseye",
+      "alpine3.18",
+      "alpine3.17"
+    ],
     "version": "13.11"
   },
   "14": {
@@ -68,11 +74,13 @@
       "version": "14.8-1.pgdg110+1"
     },
     "debian": "bullseye",
-    "debianSuites": [
-      "bullseye"
-    ],
     "major": 14,
     "sha256": "39d38f0030737ed03835debeefee3b37d335462ce4995e2497bc38d621ebe45a",
+    "variants": [
+      "bullseye",
+      "alpine3.18",
+      "alpine3.17"
+    ],
     "version": "14.8"
   },
   "15": {
@@ -87,11 +95,13 @@
       "version": "15.3-1.pgdg110+1"
     },
     "debian": "bullseye",
-    "debianSuites": [
-      "bullseye"
-    ],
     "major": 15,
     "sha256": "ffc7d4891f00ffbf5c3f4eab7fbbced8460b8c0ee63c5a5167133b9e6599d932",
+    "variants": [
+      "bullseye",
+      "alpine3.18",
+      "alpine3.17"
+    ],
     "version": "15.3"
   }
 }

versions.sh

@@ -1,15 +1,19 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-# https://github.com/docker-library/postgres/issues/582 😬
+# we will support at most two entries in each of these lists, and both should be in descending order
-defaultDebianSuite='bullseye'
+supportedDebianSuites=(
-declare -A debianSuites=(
-	[11]=''
-)
-allDebianSuites=(
 	bullseye
 )
-defaultAlpineVersion='3.18'
+supportedAlpineVersions=(
+	3.18
+	3.17
+)
+defaultDebianSuite="${supportedDebianSuites[0]}"
+declare -A debianSuites=(
+	[11]='' # https://github.com/docker-library/postgres/issues/582 😬
+)
+defaultAlpineVersion="${supportedAlpineVersions[0]}"
 declare -A alpineVersions=(
 	#[14]='3.16'
 )
@@ -35,6 +39,8 @@ _raw_package_list() {
 	curl -fsSL "$packagesBase/$suite-pgdg/$component/binary-$arch/Packages.bz2" | bunzip2
 }
 fetch_suite_package_list() {
+	local -; set +x # make sure running with "set -x" doesn't spam the terminal with the raw package lists
+
 	local suite="$1"; shift
 	local version="$1"; shift
 	local arch="$1"; shift
@@ -82,24 +88,20 @@ for version in "${versions[@]}"; do
 		debian: env.versionDebianSuite,
 	}')"
 
-	versionDebianSuites=()
-	for suite in "${allDebianSuites[@]}"; do
-		versionDebianSuites+=( "$suite" )
-	done
-
 	fullVersion=
-	for suite in "${versionDebianSuites[@]}"; do
+	for suite in "${supportedDebianSuites[@]}"; do
 		fetch_suite_package_list "$suite" "$version" 'amd64'
-		suiteVersion="$(awk_package_list "$suite" "$version" 'amd64' '
+		suiteVersions="$(awk_package_list "$suite" "$version" 'amd64' '
 			$1 == "Package" { pkg = $2 }
-			$1 == "Version" && pkg == "postgresql-" version { print $2; exit }
+			$1 == "Version" && pkg == "postgresql-" version { print $2 }
-		')"
+		' | sort -V)"
-		srcVersion="${suiteVersion%%-*}"
+		suiteVersion="$(tail -1 <<<"$suiteVersions")" # "15~beta4-1.pgdg110+1"
+		srcVersion="${suiteVersion%%-*}" # "15~beta4"
 		tilde='~'
-		srcVersion="${srcVersion//$tilde/}"
+		srcVersion="${srcVersion//$tilde/}" # "15beta4"
 		[ -n "$fullVersion" ] || fullVersion="$srcVersion"
 		if [ "$fullVersion" != "$srcVersion" ]; then
-			echo >&2 "warning: $version should be '$fullVersion' but $suite is '$srcVersion'"
+			echo >&2 "warning: $version should be '$fullVersion' but $suite has '$srcVersion' ($suiteVersion)"
 			continue
 		fi
 
@@ -122,7 +124,13 @@ for version in "${versions[@]}"; do
 				version: env.suiteVersion,
 				arches: $arches,
 			}
-			| .debianSuites += [ env.suite ]
+			| .variants += [ env.suite ]
+		')"
+	done
+
+	for alpineVersion in "${supportedAlpineVersions[@]}"; do
+		doc="$(jq <<<"$doc" -c --arg v "$alpineVersion" '
+			.variants += [ "alpine" + $v ]
 		')"
 	done