[llvm-branch-commits] [llvm] [Github] Add new workflow to build metrics container (PR #117462)

[Tom Stellard via llvm-branch-commits]

https://github.com/tstellar approved this pull request.

The workflow file looks fine to me.  I'm not sure what this container is meant to do though.

https://github.com/llvm/llvm-project/pull/117462