#GitHub finally released #ARM64 runners into public beta. I had to make some small changes to the build because the ARM Ubuntu image is a little different. But one of our service build times for the ARM64 container went down from 20 mins --> 4 mins! Win.

GitHub actions *still* does not support #ARM64 natively in runners. ARM64 builds are run in Qemu on #GitHub's AMD64-based infrastructure. A build that takes less than a minute on my Mac takes 17.5 minutes on GitHub. Sorry, but that is unusable!