test publish workflow

.github/workflows/docker.yml

@@ -0,0 +1,50 @@
+name: Publish Docker image
+
+on:
+  pull_request:
+  push:
+    branches: [ "main"]
+
+jobs:
+  push_to_registry:
+    name: Push Docker image to Docker Hub
+    if: github.event.pull_request.draft == false
+
+    runs-on: ubuntu-latest
+    env:
+      COMMIT_SHA: ${{ github.sha }}
+      IMAGE_URL: "ghcr.io/${{ github.repository }}"
+      PLATFORMS: "linux/amd64,linux/arm64"
+      DOCKERFILE_BUILD: "Dockerfile.build"
+    steps:
+      - name: Check out the repo
+        uses: actions/checkout@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push Docker image (versioned)
+        if: github.event_name == 'push'
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          push: true
+          platforms: ${{ env.PLATFORMS }}
+          tags: "${{ env.IMAGE_URL }}:latest-${{ env.COMMIT_SHA }}"
+          file: ${{ env.DOCKERFILE_BUILD }}
+
+      - name: Build and push Docker image (tagged)
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          push: ${{ github.event_name == 'push' }}
+          platforms: ${{ env.PLATFORMS }}
+          tags: "${{ env.IMAGE_URL }}/${{ github.repository }}:latest"
+          file: ${{ env.DOCKERFILE_BUILD }}