podman/docs/source/markdown/options/no-hostname.md

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

--no-hostname

Do not create the /etc/hostname file in the containers.

By default, Podman manages the /etc/hostname file, adding the container's own hostname. When the --no-hostname option is set, the image's /etc/hostname will be preserved unmodified if it exists.