add user mismatch test

In theory, we won't be able to run if our private area is not owned by
ourselves.  We could, if it have very wide open security permissions, but we
should never set up a container like that.

Aside from a basic sanity check, this is intended to catch problems for the few
people who may have already created containers that will be owned by root:root,
and will now try to run it unprivileged.

Signed-off-by: Glauber Costa <glommer@parallels.com>
1 file changed