We just landed a MR to sample-images[1] that significantly changes the layout of the repository. In particular, it now only contains the sample image manifests, and the actual configuration and magic to build automotive images using osbuild has been extracted to a new tool, called automotive-image-builder:
This was done to clarify what parts are just "sample manifests", and what parts are standard autosd build mechanics. It also will allow for easier use of the build mechanics outside of the sample-images repository.
For now, sample-images is using automotive-image-builder by the way of a git submodule, which means that everything works exactly as before (sans having to run "git submodule update --init" for old checkouts). However, a-i-b is also available as a package in the sig repos, as well as a copr[2], and the goal is to eventually move towards using a-i-b as a package like we do for other things.