Merge pull request #4 from Kurrawong/edmond/release

ci: add release workflow to build image

.github/workflows/release.yml

@@ -0,0 +1,58 @@
+name: Release
+
+on:
+  release:
+    types:
+      - published
+
+env:
+  IMAGE_NAME: ghcr.io/kurrawong/fuseki
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: latest
+
+      - name: Get release version
+        id: version
+        run: echo "VALUE=$(npx --yes semver ${{ github.event.release.tag_name }})" >> "$GITHUB_OUTPUT"
+
+      - name: Docker metadata
+        id: metadata
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.IMAGE_NAME }}
+          tags: |
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=semver,pattern={{major}}
+
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up and use Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Build container image and push
+        uses: docker/build-push-action@v5
+        with:
+          context: ./docker
+          file: ./docker/Dockerfile
+          push: true
+          tags: ${{ steps.metadata.outputs.tags }}
+          labels: ${{ steps.metadata.outputs.labels }}
+          platforms: linux/amd64,linux/arm64

README.md

@@ -5,6 +5,14 @@
 - RDF Delta Fuseki
 - RDF Delta Server
 
+## Container Image
+
+The image is available as `ghcr.io/kurrawong/fuseki:<version>` where version is composed of the jena version and this container image's build version number.
+
+For example, `ghcr.io/kurrawong/fuseki:5.2.0-0` is built on Jena Fuseki 5.2.0 and the `0` indicates the build number of this container image. If we release a new build that's still based on Jena 5.2.0, the build number will be incremented to 1 to form `ghcr.io/kurrawong/fuseki:5.2.0-1`.
+
+See the tagged [images here](https://github.com/Kurrawong/fuseki-container-image/pkgs/container/fuseki).
+
 ## Usage
 
 ## Entrypoints