See the linked feature for some details. More details need to be fleshed out then attach some issues to this.

Another big fix related to this too will be https://github.com/containers/bootc/issues/22 which will help split up "config" into individual pieces instead of a large bucket.

There is https://github.com/containers/bootc/issues/404 tracking this now and we already have some work that landed towards this using stateroots.