new workflow to build on any new tag and label the image with the tag…

… name

.github/workflows/gh_pkg_build_ON_TAG.yml

@@ -0,0 +1,36 @@
+name: Build and Push Docker Image
+
+on:
+  push:
+    tags:
+      - '*'
+
+jobs:
+  build_and_push:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v1
+
+    - name: Log in to GitHub Container Registry
+      uses: docker/login-action@v1
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Extract tag name
+      id: extract_tag
+      run: echo "::set-output name=tag_name::${GITHUB_REF#refs/tags/}"
+
+    - name: Build and push Docker image
+      uses: docker/build-push-action@v2
+      with:
+        context: .
+        file: ./Dockerfile
+        push: true
+        tags: ghcr.io/${{ github.repository }}:${{ steps.extract_tag.outputs.tag_name }}