Add tag.yaml workflow — hadolint→test→build-push on tag push

.gitea/workflows/tag.yaml

@@ -0,0 +1,48 @@
+name: Tag Release
+
+on:
+  push:
+    tags: ['*']
+
+jobs:
+  hadolint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
+      - uses: hadolint/hadolint-action@2332a7b74a6de0dda2e2221d575162eba76ba5e5 # v3.3.0
+        continue-on-error: true
+        with:
+          dockerfile: pkg/Dockerfile
+
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
+      - uses: docker/setup-buildx-action@d7f5e7f509e45cec5c76c4d5afdd7de93d0b3df5 # v4
+      - run: docker build -f pkg/Dockerfile -t ci-image:${{ github.sha }} .
+
+  build-push:
+    needs: [test]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
+      - uses: docker/setup-buildx-action@d7f5e7f509e45cec5c76c4d5afdd7de93d0b3df5 # v4
+      - uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee # v4
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      - id: meta
+        uses: docker/metadata-action@80c7e94dd9b9319bd5eb7a0e0fe9291e23a2a2e9 # v6
+        with:
+          images: jcabillot/mcp-maildir
+          tags: |
+            type=ref,event=tag
+            type=ref,event=tag,suffix=-latest
+      - uses: docker/build-push-action@f9f3042f7e2789586610d6e8b85c8f03e5195baf # v7.2.0
+        with:
+          context: .
+          file: pkg/Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          pull: true