I switched our entire container build setup to buildkit. No kaniko, no buildah, no dind. The great part is that you can split buildkitd and the buildctl.

Everything runs in its own docker runner. New buildkitd service for every job. Caching only via buildkit native cache export. Output format oci image compressed with zstd. Works pretty great so far, same or faster builds and we now create multi arch images. All on rootless runners by the way