gate CI push on DEPLOY_ENABLED; build-only when flag is off

Author: LondheShubham153

.github/workflows/ci.yml

@@ -12,7 +12,11 @@ jobs:
 
       - uses: docker/setup-buildx-action@v4
 
+      # Login + push only happen when DEPLOY_ENABLED=true.
+      # Otherwise the job builds the images locally to validate the
+      # Dockerfiles and exits green — a "dry run."
       - uses: docker/login-action@v4
+        if: ${{ vars.DEPLOY_ENABLED == 'true' }}
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
@@ -21,17 +25,13 @@ jobs:
         uses: docker/build-push-action@v7
         with:
           context: ./backend
-          push: true
-          tags: |
-            
-            ${{ secrets.DOCKERHUB_USERNAME }}/skillpulse-backend:latest
+          push: ${{ vars.DEPLOY_ENABLED == 'true' }}
+          tags: ${{ secrets.DOCKERHUB_USERNAME != '' && format('{0}/skillpulse-backend:latest', secrets.DOCKERHUB_USERNAME) || 'skillpulse-backend:latest' }}
 
       - name: Build and push frontend
         uses: docker/build-push-action@v7
         with:
           context: ./frontend
-          push: true
-          tags: |
-            
-            ${{ secrets.DOCKERHUB_USERNAME }}/skillpulse-frontend:latest
+          push: ${{ vars.DEPLOY_ENABLED == 'true' }}
+          tags: ${{ secrets.DOCKERHUB_USERNAME != '' && format('{0}/skillpulse-frontend:latest', secrets.DOCKERHUB_USERNAME) || 'skillpulse-frontend:latest' }}