podman/docs/source/markdown/options/gidmap.container.md

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

--gidmap=[flags]container_uid:from_uid[:amount]

Run the container in a new user namespace using the supplied GID mapping. This option conflicts with the --userns and --subgidname options. This option provides a way to map host GIDs to container GIDs in the same way as --uidmap maps host UIDs to container UIDs. For details see --uidmap.

Note: the --gidmap option cannot be called in conjunction with the --pod option as a gidmap cannot be set on the container level when in a pod.