Signed-off-by: Karel Zak <kzak@redhat.com>
--time=
--setuid
--setgid
+ --keep-caps
--preserve-credentials
--root=
--wd=
*nsenter* always sets UID for user namespaces, the default is 0.
If the argument "follow" is specified the UID of the target process is used.
+*--keep-caps*::
+When the *--user* option is given, ensure that capabilities granted in the user namespace are preserved in the child process.
+
*--preserve-credentials*::
Don't modify UID and GID when enter user namespace. The default is to drops supplementary groups and sets GID and UID to 0.