Look in to moving away from Earthly #894
Description
Originally Earthly was added in to help streamline the CI and release flow and clean up a lot of the things like e2e specs, integrations, etc... Plus using earthly means some things can be heavily cached and makes running parts of the specs a lot faster. It was really nice at first, but also a bit complicated and relied on having an account with a 3rd party site (albeit free).
Lately I've had a few issues using it, and since switching my dev environment to using Bazzite, I'm having trouble just installing it and running it. @russ also mentioned having some issues getting it running on Arch, but MacOS seems ok.
To add to that, in order for people to even contribute to this project, they also need to setup Earthly (ref: #884 (comment)) and that's a large barrier to entry.
I feel like we should be able to replicate most of this using a multi stage Docker build. Though, we should probably be running at least 1 full e2e test suite on Windows, Mac, and Linux directly so maybe we just go back to having those right in the spec file? They'll take longer to run, but maybe a better test case to ensure things are solid