podman/docs/source/markdown/options/cgroupns.image.md

####> This option file is used in: ####> podman build, farm build ####> If file is edited, make sure the changes ####> are applicable to all of those.

--cgroupns=how

Sets the configuration for cgroup namespaces when handling RUN instructions. The configured value can be "" (the empty string) or "private" to indicate that a new cgroup namespace is created, or it can be "host" to indicate that the cgroup namespace in which buildah itself is being run is reused.