Update publish-image-ghcr.yml

Author: LuisCoralesM

.github/workflows/publish-image-ghcr.yml

@@ -6,34 +6,37 @@ on:
   pull_request:
     branches: [main]
 
-jobs:
-  build_container:
-    name: Build Docker image
-    if: github.event_name == 'pull_request'
+jobs: 
+  build_docker:
+    name: Build and push Docker image to Github Container Registry
     runs-on: ubuntu-20.04
+    permissions:
+        packages: write
+        contents: read
     steps:
-      - name: Build the image
-        uses: docker/build-push-action@v3
-        with:
-          context: .
-          tags: user/app:latest
-  
-  push_to_registry:
-    name: Push Docker image to Github Container Registry
-    if: github.event_name == 'release'
-    runs-on: ubuntu-20.04
-    needs: [build_container]
-    steps:
+      - name: Checkout project
+        uses: actions/checkout@v3
+      
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+      
       - name: Login to GHCR
         uses: docker/login-action@v2
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Build and push image to GHCR
+        
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/[email protected]
+        with:
+          images: ghcr.io/${{ github.repository }}
+                    
+      - name: Build and push (if release) image to GHCR
         uses: docker/build-push-action@v3
         with:
           context: .
-          push: true
-          tags: user/app:latest
+          push: ${{ github.event_name == 'release' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}