$ docker run -it --rm container-registry.oracle.com/os/oraclelinux:8 bash
[root@c64be996db10 /]# ls -l /
ls: cannot access '/': Operation not permitted
[root@c64be996db10 /]# ls
ls: cannot access 'bin': Operation not permitted
ls: cannot access 'boot': Operation not permitted
ls: cannot access 'dev': Operation not permitted
ls: cannot access 'etc': Operation not permitted
ls: cannot access 'home': Operation not permitted
ls: cannot access 'lib': Operation not permitted
ls: cannot access 'lib64': Operation not permitted
ls: cannot access 'media': Operation not permitted
ls: cannot access 'mnt': Operation not permitted
ls: cannot access 'opt': Operation not permitted
ls: cannot access 'proc': Operation not permitted
ls: cannot access 'root': Operation not permitted
ls: cannot access 'run': Operation not permitted
ls: cannot access 'sbin': Operation not permitted
ls: cannot access 'srv': Operation not permitted
ls: cannot access 'sys': Operation not permitted
ls: cannot access 'tmp': Operation not permitted
ls: cannot access 'usr': Operation not permitted
ls: cannot access 'var': Operation not permitted
bin boot dev etc home lib lib64 media mnt opt proc root run sbin srv sys tmp usr var
This seems to be related to the bug https://bugzilla.redhat.com/show_bug.cgi?id=1764152
[root@c64be996db10 /]# rpm -qa coreutils
coreutils-8.30-12.0.1.el8.x86_64