Maintenance: Include packager.io build information in Zammad version string.

contrib/packager.io/before.sh

@@ -11,5 +11,16 @@ ruby -v
 env
 cat Gemfile.lock
 
+# Use more detailed version information including packager.io build info.
+if [ -z "${APP_PKG_ITERATION}" ]
+then
+  echo "Error: could not find version information, aborting."
+  exit 1
+fi
+
+ZAMMAD_VERSION="$APP_PKG_VERSION-$APP_PKG_ITERATION"
+echo "Setting VERSION information to $ZAMMAD_VERSION"
+echo "$ZAMMAD_VERSION" > VERSION
+
 # cleanup
 script/build/cleanup.sh