The hosted runner: GitHub Actions 39 lost communication with the server. Anything in your workflow that terminates the runner process, starves it for CPU/Memory, or blocks its network access can cause this error.

ubuntu-latest pipelines will use ubuntu-24.04 soon. For more details, see https://github.com/actions/runner-images/issues/10636

FromAsCasing: 'as' and 'FROM' keywords' casing do not match More info: https://docs.docker.com/go/dockerfile/rule/from-as-casing/