chore: improve Docker command in release workflow for better tag handling

Author: srijanpatel

.github/workflows/release.yml

@@ -56,7 +56,8 @@ jobs:
           mkdir -p dist
           
           # Build package using the container we just built
-          docker run --rm -v $(pwd)/dist:/dist ${{ steps.meta-backend.outputs.tags }} sh -c "cd /pyspur/backend && uv build && cp dist/* /dist/"
+          DOCKER_TAG=$(echo "${{ steps.meta-backend.outputs.tags }}" | cut -d' ' -f1)
+          docker run --rm -v "$(pwd)/dist:/dist" "$DOCKER_TAG" sh -c "cd /pyspur/backend && uv build && cp dist/* /dist/"
 
       - name: Publish package to PyPI
         uses: pypa/gh-action-pypi-publish@release/v1