make release to mark image source

.github/workflows/clean_repository.yml

@@ -0,0 +1,20 @@
+name: Delete old workflow runs
+on:
+  schedule:
+    - cron: '45 11 * * 0'
+  workflow_dispatch:
+
+jobs:
+  del_runs:
+    runs-on: ubuntu-latest
+    permissions:
+      actions: write
+      contents: read
+    steps:
+      - name: Delete workflow runs
+        uses: Mattraks/delete-workflow-runs@v2
+        with:
+          token: ${{ github.token }}
+          repository: ${{ github.repository }}
+          retain_days: 30
+          keep_minimum_runs: 7

.github/workflows/release_stable.yml

@@ -55,6 +55,29 @@ jobs:
           SUMMARY=$'Image ${{ env.DOCKER_NAMESPACE }}/${{ env.DOTCLEAR_IMAGE }}:${{ steps.dotclear.outputs.version }} found.'
           echo "$SUMMARY" >> $GITHUB_STEP_SUMMARY
 
+  do_release:
+    needs: check_image
+    if: ((needs.check_image.outputs.exists == 'false') || (github.event.inputs.rebuild == 'true'))
+    name: Create repository tag and release
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@v3
+      - uses: ncipollo/release-action@v1
+        with:
+          name: Docker Dotclear ${{ needs.check_image.outputs.version }}
+          commit: master
+          tag: ${{ needs.check_image.outputs.version }}
+          body: Source for docker image of Dotclear ${{ needs.check_image.outputs.version }} stable
+          draft: false
+          prerelease: false
+
+      - name: summary
+        run: |
+          SUMMARY=$'Docker Dotclear ${{ steps.dotclear.outputs.version }} release created.'
+          echo "$SUMMARY" >> $GITHUB_STEP_SUMMARY
+
   do_image:
     needs: check_image
     if: ((needs.check_image.outputs.exists == 'false') || (github.event.inputs.rebuild == 'true'))