This matches the behavior of other volume and mount types. Image
volumes and volumes/mounts from the `--volumes-from` flag should
be overridden by actual user-specified named volumes and mounts,
but this was not true for overlay mounts. Fortunately, our
duplicate-mount detection logic still works, so we got a good
error message at least.
The fix is simple - extend our supersede logic, which currently
only works with named volumes and mounts, to also work with
overlay mounts.
Fixes#24555
Signed-off-by: Matt Heon <mheon@redhat.com>
61b57b7d7d