🐳 publish docker on main push and release

.github/workflows/docker-image.yml

@@ -1,17 +1,52 @@
-name: Docker Image CI
+name: Demo Push
+
+# Taken from https://docs.github.com/en/packages/managing-github-packages-using-github-actions-workflows/publishing-and-installing-a-package-with-github-actions#upgrading-a-workflow-that-accesses-a-registry-using-a-personal-access-token
 
 on:
-  release:
-    types: [published]
-
+  push:
+    # Publish `main` as Docker `latest` image.
+    branches:
+      - main
+
+    # Publish `v1.2.3` tags as releases.
+    tags:
+      - v*
+
+env:
+  IMAGE_NAME: bisupervised
+
 jobs:
-  build:
+  # Push image to GitHub Packages.
+  # See also https://docs.docker.com/docker-hub/builds/
+  push:
     runs-on: ubuntu-latest
+    permissions:
+      packages: write
+      contents: read
 
     steps:
-    - uses: actions/checkout@v3
-    - name: Build the Docker image
-      run: docker build . -t ghcr.io/testingautomated-usi/bisupervised:${{github.ref_name}}
-
-    - name: Publish to github container repository
-      run: docker push ghcr.io/testingautomated-usi/bisupervised:${{github.ref_name}}
+      - uses: actions/checkout@v3
+
+      - name: Build image
+        run: docker build . --file Dockerfile --tag $IMAGE_NAME --label "runnumber=${GITHUB_RUN_ID}"
+
+      - name: Log in to registry
+        # This is where you will update the personal access token to GITHUB_TOKEN
+        run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u $ --password-stdin
+
+      - name: Push image
+        run: |
+          IMAGE_ID=ghcr.io/${{ github.repository_owner }}/$IMAGE_NAME
+
+          # Change all uppercase to lowercase
+          IMAGE_ID=$(echo $IMAGE_ID | tr '[A-Z]' '[a-z]')
+          # Strip git ref prefix from version
+          VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')
+          # Strip "v" prefix from tag name
+          [[ "${{ github.ref }}" == "refs/tags/"* ]] && VERSION=$(echo $VERSION | sed -e 's/^v//')
+          # Use Docker `latest` tag convention
+          [ "$VERSION" == "main" ] && VERSION=latest
+          echo IMAGE_ID=$IMAGE_ID
+          echo VERSION=$VERSION
+          docker tag $IMAGE_NAME $IMAGE_ID:$VERSION
+          docker push $IMAGE_ID:$VERSION