tiny edit

Author: erhant

.github/workflows/build_dev_container.yml

@@ -44,7 +44,7 @@ jobs:
 
       - name: Set Image Tag
         id: itag
-        run: echo "itag=${{ steps.branch.outputs.branch }}-${{ steps.sha.outputs.sha }}-${{ steps.timestamp.outputs.timestamp }}" >> $GITHUB_OUTPUT
+        run: echo "itag=testing-${{ steps.sha.outputs.sha }}-${{ steps.timestamp.outputs.timestamp }}" >> $GITHUB_OUTPUT
 
       - name: Build and push
         uses: docker/build-push-action@v6