Add action to clean packages

.github/workflows/clean_packages.yml

@@ -0,0 +1,56 @@
+---
+name: Remove old unused scrumlr packages
+
+on:
+  push:
+    branches:
+      - fs/clean_packages
+  # schedule:
+  #   - cron: "30 10 * * 1" # TODO: enable cronjob if it works
+
+jobs:
+  clean_scrumlr_server_packages:
+    name: "clean scrumlr server packages"
+    runs-on: ubuntu-latest
+    steps:
+      - uses: smartsquaregmbh/delete-old-packages@v0.8.1
+        with:
+          organization: "inovex"
+          names: "scrumlr.io/scrumlr-server"
+          type: "container"
+          keep: 50
+          dry-run: "true"
+
+  clean_scrumlr_frontend_packages:
+    name: "clean scrumlr frontend packages"
+    runs-on: ubuntu-latest
+    steps:
+      - uses: smartsquaregmbh/delete-old-packages@v0.8.1
+        with:
+          organization: "inovex"
+          names: "scrumlr.io/scrumlr-frontend"
+          type: "container"
+          keep: 256
+          dry-run: "true"
+
+  # clean_scrumlr_server_packages:
+  #   name: "clean scrumlr server packages"
+  #   runs-on: ubuntu-latest
+  #   steps:
+  #     - uses: actions/delete-package-versions@v5
+  #       with:
+  #         package-name: "scrumlr.io/scrumlr-server"
+  #         package-type: "container"
+  #         min-versions-to-keep: 256
+  #         delete-only-untagged-versions: "true"
+
+  # clean_scrumlr_frontend_packages:
+  #   name: "clean scrumlr frontend packages"
+  #   runs-on: ubuntu-latest
+  #   steps:
+  #     - uses: actions/delete-package-versions@v5
+  #       with:
+  #         package-name: "scrumlr.io/scrumlr-frontend"
+  #         package-type: "container"
+  #         min-versions-to-keep: 256
+  #         delete-only-untagged-versions: "true"