GHCR Changes

Use docker/metadata-action to generate tags and labels
Add second docker/login-action to support GHCR
Use docker/setup-qemu-action for multi-arch build
Update docker/serup-buildx-action to v3
Fix nightly to only be built for 3.12 and fix image tags

.github/workflows/docker-publish.yml

@@ -33,12 +33,13 @@ jobs:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
       - uses: actions/checkout@v4
 
-      -
+      - 
+        name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - 
         name: Set up Docker Buildx
-        id: buildx
         uses: docker/setup-buildx-action@v3
-        with:
-          install: true
 
       -
         name: Inspect builder
@@ -56,50 +57,98 @@ jobs:
           version-file: Dockerfile
           version-file-extraction-pattern: '(?<=SOPEL_BRANCH=v).+'
 
-      - name: Inspect Version
-        id: tags
-        env:
-          PYTHON_TAG: ${{ matrix.python_images }}
-          IMAGE: ${{ secrets.DOCKER_SOPEL_IMAGE_NAME }}
-          version: ${{ env.RELEASE_VERSION }}
-        run: | 
-          if [ "${{ github.event_name }}" == "pull_request" ]; then IMAGE="sopel"; fi
-          TAGS="${IMAGE}:${version}-py${PYTHON_TAG},${IMAGE}:${version%.*}-py${PYTHON_TAG},${IMAGE}:${version%.*.*}-py${PYTHON_TAG}"
-          if [[ "x${{ matrix.python_images }}" == "x${{ env.default_python }}" ]] && [[ "${{ github.event_name }}" == "push" || "${{ github.event_name }}" == "workflow_dispatch" ]]; then
-            TAGS="${TAGS},${IMAGE}:${version},${IMAGE}:${version%.*},${IMAGE}:${version%.*.*},${IMAGE}:latest"
-          elif [[ "${{ github.event_name }}" == "schedule" ]]; then
-            TAGS="${IMAGE}:nightly"
-          fi
-          echo ::set-output name=tags::${TAGS}
+      -
+        name: Docker meta
+        id: meta-default
+        uses: docker/metadata-action@v5
+        if: matrix.python_images == env.default_python
+        with:
+          images: |
+            ${{ vars.DOCKER_HUB_IMAGE_NAME }}
+            ghcr.io/${{ github.repository_owner }}/sopel
+          flavor: |
+            latest=true
+          tags: |
+            type=ref,event=branch
+
+            # Nighly
+            type=schedule,pattern=nightly
+
+            # Python full version
+            type=semver,pattern={{major}},value=v${{ env.RELEASE_VERSION }},suffix=-py${{ matrix.python_images }}
+            type=semver,pattern={{major}}.{{minor}},value=v${{ env.RELEASE_VERSION }},suffix=-py${{ matrix.python_images }}
+            type=semver,pattern={{version}},value=v${{ env.RELEASE_VERSION }},suffix=-py${{ matrix.python_images }}
+
+
+            # Python 3
+            type=semver,pattern={{major}},value=v${{ env.RELEASE_VERSION }},suffix=-py3
+            type=semver,pattern={{major}}.{{minor}},value=v${{ env.RELEASE_VERSION }},suffix=-py3
+            type=semver,pattern={{version}},value=v${{ env.RELEASE_VERSION }},suffix=-py3
+
+            # Version only
+            type=semver,pattern={{major}},value=v${{ env.RELEASE_VERSION }}
+            type=semver,pattern={{major}}.{{minor}},value=v${{ env.RELEASE_VERSION }}
+            type=semver,pattern={{version}},value=v${{ env.RELEASE_VERSION }}
 
+      -
+        name: Docker meta
+        id: meta-alt-python
+        uses: docker/metadata-action@v5
+        if: matrix.python_images != env.default_python
+        with:
+          images: |
+            ${{ vars.DOCKER_HUB_IMAGE_NAME }}
+            ghcr.io/${{ github.repository_owner }}/sopel
+          flavor: |
+            latest=false
+            suffix=-py${{ matrix.python_images }}
+          tags: |
+            # Nighly
+            type=schedule,pattern=nightly
+            # Python full version
+            type=semver,pattern={{major}},value=v${{ env.RELEASE_VERSION }}
+            type=semver,pattern={{major}}.{{minor}},value=v${{ env.RELEASE_VERSION }}
+            type=semver,pattern={{version}},value=v${{ env.RELEASE_VERSION }}
       -
         name: Login to Docker Hub
         uses: docker/login-action@v3
         if: github.event_name != 'pull_request'
         with:
           username: ${{ secrets.DOCKER_HUB_USERNAME }}
           password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}
+      -
+        name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        if: github.event_name != 'pull_request'
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
       -
         name: Build SOPEL for ${{ matrix.python_images }}
         uses: docker/build-push-action@v5
         if: github.event_name != 'schedule'
         with:
-          builder: ${{ steps.buildx.outputs.name }}
           context: .
           file: ./Dockerfile
           build-args: PYTHON_TAG=${{ matrix.python_images }}-alpine
+          platforms: linux/amd64,linux/arm64,linux/arm/v7,linux/arm/v6,linux/s390x
           push: ${{ github.event_name != 'pull_request' }}
-          tags: ${{ steps.tags.outputs.tags }}
+          tags: ${{ steps.meta-default.outputs.tags }}${{ steps.meta-alt-python.outputs.tags }}
+          labels: ${{ steps.meta-default.outputs.labels }}${{ steps.meta-alt-python.outputs.labels }}
+
       -
         name: Build Nightly SOPEL for ${{ matrix.python_images }}
         uses: docker/build-push-action@v5
-        if: github.event_name == 'schedule' && matrix.python_images == env.default_python
+        if: github.event_name == 'schedule'
         with:
-          builder: ${{ steps.buildx.outputs.name }}
           context: .
           file: ./Dockerfile
           build-args: |
             PYTHON_TAG=${{ matrix.python_images }}-alpine
             SOPEL_BRANCH=master
+          platforms: linux/amd64,linux/arm64,linux/arm/v7,linux/arm/v6,linux/s390x
           push: ${{ github.event_name != 'pull_request' }}
-          tags: ${{ steps.tags.outputs.tags }}
+          tags: ${{ steps.meta-default.outputs.tags }}${{ steps.meta-alt-python.outputs.tags }}
+          labels: ${{ steps.meta-default.outputs.labels }}${{ steps.meta-alt-python.outputs.labels }}