Use earthbuild image by default

[gnuletik]

What went wrong?

It seems that earthbuild still use the earthly buildkitd image by default.
This can be fixed with the following command:

earth config global.buildkit_image 'docker.io/earthbuild/buildkitd:v0.8.17'

Using the earthbuild image fixes an issue when running docker in docker:

runc run failed: unable to start container process: error during container init: error mounting "/var/earthbuild/docker-auto-install.sh" to rootfs at "/var/earthbuild/docker-auto-install.sh":
stat /var/earthbuild/docker-auto-install.sh: no such file or directory

Should this be enabled by default?

Thanks!

What should have happened?

It should use the earthbuild buildkitd image by default.

What earthly version?

earth --version
earth version vHEAD-8f019dd 8f019dd darwin/arm64; macOS 26.3.1 homebrew-earthbuild

Buildkit Logs

No response

Other Helpful Information

No response