Create publish.yml

.github/workflows/publish.yml

@@ -0,0 +1,52 @@
+name: Publish to GitHub Container Registry
+
+on:
+  push:
+    # Publish `v*` tags as releases.
+    tags:
+    - v*
+  pull_request:
+
+env:
+  IMAGE_NAME: hugo-extended
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Build image
+      run: docker build . --file Dockerfile
+
+  # Push image to GitHub Container Registry
+  push:
+    runs-on: ubuntu-latest
+    if: github.event_name == 'push'
+    needs: build
+    steps:
+    - uses: actions/checkout@v2
+    - name: Build image
+      run: docker build . --file Dockerfile --tag $IMAGE_NAME
+    - name: Login to GitHub Container Registry
+      run: echo "${{ secrets.GHCR_PAT }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin
+    - name: Push image to GitHub
+      run: |
+        IMAGE_ID=ghcr.io/${{ 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 $VERSION | sed -e 's/^v//')
+
+        echo IMAGE_ID=$IMAGE_ID
+        echo VERSION=$VERSION
+
+        # Push image with both version tag and `latest` tag
+        docker tag $IMAGE_NAME $IMAGE_ID:$VERSION
+        docker tag $IMAGE_NAME $IMAGE_ID:latest
+        docker push $IMAGE_ID:$VERSION
+        docker push $IMAGE_ID:latest