message: workflow: only do new release upon push event
  For other events like the scheduled one, we don't want to push anything
  to the release page.
diff: @@ -116,6 +116,7 @@ jobs:
  echo "tag=$tag" >> $GITHUB_ENV
  echo "tarball=$tarball" >> $GITHUB_ENV
  - name: Release
  + if: ${{ github.event_name == 'push' }}
  uses: softprops/action-gh-release@v1
  with:
  name: "Nydus Image Service ${{ env.tag }}"
  