Comment # 3 on bug 1231231 from Danish Prakash

I don't know if it was supposed to work without `--root` or not--rootless
podman within rootless podman works btw--but I suspect it's broken due to
conflicts with state files between containers on the host and distrobox's. I'll
take a deeper look into this next week and report back with an update, but for
now, the workaround is to use the `--root` flag as Alexandre suggested.