Use "apt-get source --compile" to build for Debian architectures upstream doesn't

update.sh

@@ -32,13 +32,16 @@ packagesBase='http://apt.postgresql.org/pub/repos/apt/dists/'
 osspUuidVersion='1.6.2'
 osspUuidHash='11a615225baa5f8bb686824423f50e4427acd3f70d394765bdff32801f0fd5b0'
 
-declare -A suitePackageList
+declare -A suitePackageList=() suiteArches=()
 travisEnv=
 for version in "${versions[@]}"; do
 	suite="${debianSuite[$version]}"
 	if [ -z "${suitePackageList["$suite"]:+isset}" ]; then
 		suitePackageList["$suite"]="$(curl -fsSL "${packagesBase}/${suite}-pgdg/main/binary-amd64/Packages.bz2" | bunzip2)"
 	fi
+	if [ -z "${suiteArches["$suite"]:+isset}" ]; then
+		suiteArches["$suite"]="$(curl -fsSL "${packagesBase}/${suite}-pgdg/Release" | gawk -F ':[[:space:]]+' '$1 == "Architectures" { gsub(/[[:space:]]+/, "|", $2); print $2 }')"
+	fi
 
 	versionList="$(echo "${suitePackageList["$suite"]}"; curl -fsSL "${packagesBase}/${suite}-pgdg/${version}/binary-amd64/Packages.bz2" | bunzip2)"
 	fullVersion="$(echo "$versionList" | awk -F ': ' '$1 == "Package" { pkg = $2 } $1 == "Version" && pkg == "postgresql-'"$version"'" { print $2; exit }' || true)"
@@ -48,6 +51,7 @@ for version in "${versions[@]}"; do
 		sed -e 's/%%PG_MAJOR%%/'"$version"'/g;' \
 			-e 's/%%PG_VERSION%%/'"$fullVersion"'/g' \
 			-e 's/%%DEBIAN_SUITE%%/'"$suite"'/g' \
+			-e 's/%%ARCH_LIST%%/'"${suiteArches["$suite"]}"'/g' \
 			Dockerfile-debian.template > "$version/Dockerfile"
 		if [ "$version" = '10' ]; then
 			# postgresql-contrib-10 package does not exist, but is provided by postgresql-10
@@ -109,7 +113,8 @@ for version in "${versions[@]}"; do
 		travisEnv="\n  - VERSION=$version VARIANT=$variant$travisEnv"
 	done
 
-	travisEnv='\n  - VERSION='"$version$travisEnv"
+	travisEnv="\n  - VERSION=$version FORCE_DEB_BUILD=1$travisEnv"
+	travisEnv="\n  - VERSION=$version$travisEnv"
 done
 
 travis="$(awk -v 'RS=\n\n' '$1 == "env:" { $0 = "env:'"$travisEnv"'" } { printf "%s%s", $0, RS }' .travis.yml)"