Publish image on release

.github/workflows/dockerize.yml

@@ -4,6 +4,12 @@ on:
   release:
     types: [published]
 
+permissions:
+  contents: read
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
 jobs:
   build-image-and-publish:
     name: Publish Docker Image to Docker Hub
@@ -23,8 +29,23 @@ jobs:
       - name: Build with Maven
         run: mvn -B package --file pom.xml
 
-      - name: Dockerize
-        run: docker build -f ./Dockerfile -t load-flow-service:${{ github.event.release.tag_name }}
+      - name: Docker login
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Meta data extraction
+        uses: docker/metadata-action@v5
+        id: meta
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
 
-      - name: Publish
-        run: echo "No publishing action implemented"
+      - name: Push image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}