I think the idea is to run the CI on your laptop for debugging and building the CI process itself. This dramatically shortens the build-test cycle (for the CI,

I think the idea is to run the CI on your laptop for debugging and building the CI process itself. This dramatically shortens the build-test cycle (for the CI, not your product). Instead of "edit, git push, wait for runners, download logs, stare confusedly, repeat", you have "edit, run locally, watch logs, stare confusedly, repeat". Plus you can get real access to the actual runners, so maybe you can do things like strace, gdb, etc to see what is going wrong.