Add initial GitHub Actions for Container Registry

.github/workflows/release.yml

@@ -0,0 +1,37 @@
+name: Release
+
+on:
+  - push
+#    tags:
+#      - '*'
+
+jobs:
+  docker:
+    name: Docker image
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/[email protected]
+
+      - name: Use Docker builder
+        uses: docker/setup-buildx-action@v1
+
+      - name: Login to Container Registry
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.REGISTRY_TOKEN }}
+
+      - name: Docker build and push
+        uses: docker/build-push-action@v2
+        with:
+          context: ./
+          file: ./Dockerfile
+          labels: |
+            org.opencontainers.image.authors=${{ github.repository_owner }}
+            org.opencontainers.image.revision=${{ github.sha }}
+            org.opencontainers.image.source=https://github.com/${{ github.repository }}
+          tags: |
+            ghcr.io/${{ secrets.REGISTRY_IMAGE }}:latest
+#            ghcr.io/${{ secrets.REGISTRY_IMAGE }}:${{ github.ref }}
+          push: true