There are at least three ip addresses, so calling twice isn't
sufficient. However if we have at least one it seems to add
the other addresses without prompting. If we don't have an
entry it asks for confirmation, so try connecting with the
check disabled when we build the container.

We print the public half of the key pair when the daemon
script is started so we can pull it from the logs and
authorize the container instance with the remote server.

I'm unclear how --mirror interacts with fetch/pull and push.
I get an error using 'pull' to a bare repo because there's
not working copy to update. I assume 'fetch' is therefore
good enough and that 'push --mirror' will copy the fetched
changes.