👷 [#maykinmedia/open-api-framework#195] add stable tag with last version

Author: TimdeBeer1

.github/workflows/publish.yml

@@ -60,3 +60,12 @@ jobs:
 
       - name: Push the Docker image
         run: docker push ${{ inputs.docker-image-name }}:${{ steps.vars.outputs.tag }}
+
+      - name: Push stable tag
+        if: >
+          startsWith(github.ref, 'refs/tags/') &&
+          matches(github.ref, '^refs/tags/v?[0-9]+\\.[0-9]+(\\.[0-9]+)?$')
+        run: |
+          docker tag ${{ inputs.docker-image-name }}:${{ steps.vars.outputs.tag }} \
+                    ${{ inputs.docker-image-name }}:stable
+          docker push ${{ inputs.docker-image-name }}:stable