Set up CI to run buck2 samples

[nlopezgi]

• Creating PR to run Buck2 samples in CI
• Uses github auth to authenticate buck2 client with EngFlow cluster - https://docs.engflow.com/re/config/options.html#experimental_github_auth_container
• Uses latest version of Buck2, if we start having issues with this approach will migrate to use of dotslash for configs.
• Runs the cpp, golang and python Buck2 samples, as more are added they need to be include in the test script
• DONE: use pre-installed zstd once I release images with the package

[TheGrizzlyDev]

can't you create an alias instead and use an absolute path? Something like alias buck2="$(realpath buck2-exe)" and then just invoke buck2 normally

[nlopezgi]

done

[TheGrizzlyDev]

Nit

[TheGrizzlyDev]

You could have also used a function FYI

[nlopezgi]

Thanks. I will consider that option in the general case. In this case I think using a function might be too much, but if the script starts getting more complex as we add more samples I will switch to using a function.