changed the determine tag name based on branch condition

Author: Priyanka-Microsoft

.github/workflows/docker-build-and-push.yml

@@ -49,7 +49,16 @@ jobs:
 
       - name: Determine Tag Name Based on Branch
         id: determine_tag
-        run: echo "tagname=${{ github.ref_name == 'main' && 'latest' || github.ref_name == 'dev' && 'dev' || github.ref_name == 'demo' && 'demo' || github.head_ref || 'default' }}" >> $GITHUB_OUTPUT
+        run: |
+          if [[ "${{ github.ref }}" == "refs/heads/main" ]]; then
+            echo "tagname=latest" >> $GITHUB_ENV
+          elif [[ "${{ github.ref }}" == "refs/heads/dev" ]]; then
+            echo "tagname=dev" >> $GITHUB_ENV
+          elif [[ "${{ github.ref }}" == "refs/heads/demo" ]]; then
+            echo "tagname=demo" >> $GITHUB_ENV
+          else
+            echo "tagnames=pullrequest-ignore" >> $GITHUB_ENV
+          fi
 
       - name: Build Docker Image and optionally push
         uses: docker/build-push-action@v6