Update dockerimage.yml

Pushing to GitHub Package Registry

.github/workflows/dockerimage.yml

@@ -1,14 +1,37 @@
-name: Docker Image CI
+name: Build Docker Image
 
-on: [push]
+on:
+  push:
+    tags:
+      - v*
 
 jobs:
-
-  build:
-
+  # Push image to GitHub Package Registry.
+  build-and-push:
     runs-on: ubuntu-latest
+    if: github.event_name == 'push'
 
     steps:
-    - uses: actions/checkout@v1
-    - name: Build the Docker image
-      run: docker build . --file Dockerfile --tag my-image-name:$(date +%s)
+      - uses: actions/checkout@v2
+
+      - name: Build the Docker image
+        run: docker build . --file Dockerfile --tag vasilev/palemoon
+
+      - name: Log into registry
+        run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login docker.pkg.github.com -u ${{ github.actor }} --password-stdin
+
+      - name: Push image
+        run: |
+          IMAGE_ID=docker.pkg.github.com/${{ github.repository }}/palemoon
+
+          # 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
+
+          docker tag vasilev/palemoon $IMAGE_ID:$VERSION
+          docker push $IMAGE_ID:$VERSION