Move non-linux builds to github

[Jake-Shadle]

This allows CI to still check windows/macos compile, but actually run in parallel rather than serializing on each platform and wasting valuable CI time

[XAMPPRocky]

Have to defer @markmandel here, I think there might be some google policy here that prevents this, otherwise I'm all for it.

[quilkin-bot]

Build Succeeded 🥳

Build Id: 876b0449-2dbf-426e-b576-499c76f9fc99

The following development images have been built, and will exist for the next 30 days:

• us-docker.pkg.dev/quilkin/ci/quilkin:0.8.0-dev-705c67d

To build this version:

git fetch [email protected]:googleforgames/quilkin.git pull/899/head:pr_899 && git checkout pr_899
cargo build

[markmandel]

I had a refresh of our current policies - and GitHub Actions is now definitely on the table 🙌🏻!

I would limit it to anything that doesn't maintain an artifact of some kind / interact with the Google Cloud infrastructure though. Using Cloud Build where there is an artifact, means there's a direct path between the Google Cloud infra - where the artifact gets built - and where it ends up being hosted (even if it ends up being a download on GitHub, it's going through a Google laptop), so we can lean on Google as a whole for security pipeline -- but for just testing, this is totally fine.

The only thought I have is that the current build step via Cloud Build also tests that the cross platform build works at release time. It's probably going to be fine / can be fixed at release time if something does break, but just something to consider. Also since we release every couple of months, and we run CI all the time, the benefit definitely outweighs any extra time we spend at release.

So I'm happy to merge unless that is a bigger concern for anyone else?