feat: automatic Docker build and upload to Docker Hub

.github/workflows/docker-publish.yml

@@ -0,0 +1,45 @@
+name: Build and Publish Docker Image
+
+on:
+  push:
+    branches: [main]
+  release:
+    types: [published]
+
+jobs:
+  docker-build-publish:
+    name: Build and Publish Docker Image
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Checkout Repository
+        uses: actions/checkout@v6
+
+      - name: Log in to Docker Hub
+        if: github.repository == 'finos/git-proxy'
+        uses: docker/login-action@v3
+        with:
+          username: finos
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Set Docker Image Tag
+        id: tags
+        run: |
+          if [ "${{ github.event_name }}" = "release" ]; then
+            echo "tags=finos/git-proxy:${{ github.ref_name }},finos/git-proxy:latest" >> $GITHUB_OUTPUT
+          else
+            echo "tags=finos/git-proxy:main" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Build and Publish Docker Image
+        if: github.repository == 'finos/git-proxy'
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: Dockerfile
+          push: true
+          tags: ${{ steps.tags.outputs.tags }}
+          provenance: true