> we can't trust the build steps to not trash the build-runner so the entire thing needs to be thrown away. I think it's partly this, and partly that everythin

> we can't trust the build steps to not trash the build-runner so the entire thing needs to be thrown away. I think it's partly this, and partly that everything is shared infrastructure now. I don't want to pay to keep a machine up 24/7 just to use it to run a build for 10 minutes half a dozen times per day. So instead I lease time on shared hardware with ephemeral "containers" or "virtual machines" or whatever.