Some notes about Buildah.
Introduction
Buildah is designed to create a rootfs directory on disk and allow other tools to populate the directory, then create the JSON file. Finally, Buildah creates the OCI image and push it to a container registry where it could be used by any container engine, like Docker, Podman, CRI-O, or another Buildah.
Buildah also supports Dockerfile, since we know the bulk of people building containers have created Dockerfiles.