Bug#1067480: hostname: fails to change host name inside container; misleading message "you must be root to change the host name" while root

[Gioele Barabucci]

Package: hostname
Version: 3.23+nmu1

Dear hostname maintainer,
`hostname` fails to set the host name when run inside a container. After 
it fails it states "you must be root to change the host name" even if 
called by root.

To reproduce:

    $ sudo podman image pull debian:bookworm
    Trying to pull docker.io/library/debian:bookworm...
    [...]
    $ sudo podman run debian:bookworm bash -c 'whoami; hostname a.b.c'
    root
    hostname: you must be root to change the host name

Regards,

--
Gioele Barabucci