Github action to publish docker image for every new version tag

.github/workflows/release_docker.yaml

@@ -0,0 +1,64 @@
+name: release-docker
+
+on:
+  workflow_dispatch:
+  push:
+    tags:
+      - 'v*'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+
+  docker:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to DockerHub
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Check out the repo
+        uses: actions/checkout@v4
+
+      - name: Extract metadata (tags, labels) for Docker Hub
+        id: meta_dockerhub
+        uses: docker/metadata-action@v5
+        with:
+          images: "openml/php-rest-api"
+
+      - name: Build and push
+        id: docker_build
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: docker/Dockerfile
+          tags: "dev_${{ steps.meta_dockerhub.outputs.tags }}"
+          labels: ${{ steps.meta_dockerhub.outputs.labels }}
+          platforms: linux/amd64,linux/arm64
+          push: ${{ github.event_name == 'push' }}
+
+      - name: Update repo description
+        if: ${{ startsWith(github.ref, 'refs/tags/v') }}
+        uses: peter-evans/dockerhub-description@v4
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+          repository: openml/php-rest-api
+          short-description: "PHP rest api for OpenML."
+          readme-filepath: ./docker/README.md
+
+      - name: Image digest
+        run: echo ${{ steps.docker_build.outputs.digest }}