Comment 5 for bug 1870310

> users:
> - default
> - name: $USER
> groups: [ubuntu]
> ssh_authorized_keys:
> - $( cat ~/.ssh/id_rsa.pub )

This is actually what happens with Multipass, since we enforce the `default` user. And this breaks in the same way - the "ubuntu" group gets created before the default user is created - and that then breaks.