[llvm] workflows: Rewrite build-ci-container to work on larger runners (PR #117353)

[Aiden Grossman via llvm-commits]

boomanaiden154 wrote:

> OK, do you think I should update this PR to use those runners instead or wait a few weeks?

I would say update it to use the new runners. This job doesn't run very often and probably shouldn't take that long to run on a decent sized machine.

> Depot runners are up-to 64 CPUs. The number of CPUs is part of the runs-on label so you can choose the right size machine that fits the job.

Ah, interesting. We don't have that much flexibility currently but could theoretically add the capability. Everything that I have seen/can imagine though either requires not much compute and should probably run on the free Github runners or requires a lot and would benefit from as many cores as possible.

https://github.com/llvm/llvm-project/pull/117353