Add Gitea Alpine registry workflow

scripts/apk/container-entrypoint.sh

@@ -7,7 +7,7 @@ repo_name="${ALPINE_REPO_NAME:-local}"
 arch="${ALPINE_ARCH:-x86_64}"
 
 export CARCH="${CARCH:-$arch}"
-export PACKAGER="${PACKAGER:-Local Builder <local@example.invalid>}"
+export PACKAGER="${PACKAGER:-Joachim Schlöffel <me@joachim-schloeffel.com>}"
 if [[ -n "${PACKAGER_PRIVKEY:-}" ]]; then
   export PACKAGER_PRIVKEY
 fi