Add tool for generating manifest for official images

Author: cmouse

generate-stackbrew-library.sh

@@ -0,0 +1,39 @@
+#!/bin/bash
+set -euo pipefail
+
+fileCommit() {
+	git log -1 --format='format:%H' HEAD -- "$@"
+}
+
+self="$(basename "$BASH_SOURCE")"
+cd "$(dirname "$(readlink -f "$BASH_SOURCE")")"
+
+# Header.
+cat <<-EOH
+# This file is generated via https://github.com/dovecot/docker/blob/$(fileCommit "$self")/$self
+Maintainers: Aki Tuomi <[email protected]> (@cmouse), Timo Sirainen <[email protected]> (@sirainen)
+GitRepo: https://github.com/dovecot/docker.git
+
+EOH
+
+## FIXME: Add support for 2.3-latest when 2.4 is out
+latest=", latest"
+
+head=$(git log -1 --format='format:%H' HEAD)
+
+# Versions
+for ver in `ls -rdv 2.3* | head -2`; do 
+  if [ -d $ver ]; then
+   h=$(fileCommit $ver)
+   if [ "$h" != "" ]; then
+     cat <<-EOH
+Tags: $ver$latest
+Architectures: amd64
+Directory: $ver
+GitCommit: $head
+
+EOH
+    latest=
+    fi
+  fi
+done