Running 'podman --privileged run registry.access.redhat.com/ubi8/ubi'
(on Fedora 38, rootless) I'd like to use `podman pull <image>` inside
the container (this is actually done by the Mock RPM build tool).

The `podman pull` in container fails, though:
[root@10524f9e528c results]# podman pull fedora:38
Error: filesystem type 0x65735546 reported for /var/lib/containers/storage is not supported with 'overlay': backing file system is unsupported for this graph driver

Configuring this in /etc/containers/storage.conf helps:

[storage.options.overlay]
mount_program = "/usr/bin/fuse-overlayfs"

It would be nice if `podman pull` in the ubi8 container worked without
additional configuration.