Add a new script to make it trivial and less error-prone to perform a mass version-bump

update.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+set -e
+
+cd "$(dirname "$(readlink -f "$BASH_SOURCE")")"
+
+versions=( "$@" )
+if [ ${#versions[@]} -eq 0 ]; then
+	versions=( */ )
+fi
+versions=( "${versions[@]%/}" )
+
+packagesUrl='http://apt.postgresql.org/pub/repos/apt/dists/wheezy-pgdg/main/binary-amd64/Packages'
+packages="$(echo "$packagesUrl" | sed -r 's/[^a-zA-Z.-]+/-/g')"
+curl -sSL "${packagesUrl}.bz2" | bunzip2 > "$packages"
+
+for version in "${versions[@]}"; do
+	fullVersion="$(grep -m1 -A10 "^Package: postgresql-$version\$" "$packages" | grep -m1 '^Version: ' | cut -d' ' -f2)"
+	(
+		set -x
+		cp Dockerfile.template "$version/Dockerfile"
+		sed -i 's/%%PG_MAJOR%%/'$version'/g; s/%%PG_VERSION%%/'$fullVersion'/g' "$version/Dockerfile"
+	)
+done
+
+rm "$packages"