How to skip repository upgrade in 'fai-setup -v'

[Henning Sprang]

Peter Bittner wrote:
> When I execute 'fai-setup -v' the script first finishes installing the
> base system ("I: Base system installed successfully. Creating
> base.tgz"). Then the script tries to upgrade the new repository
> ("Upgrading /srv/fai/nfsroot/live/filesystem.dir").
> 
> As the server is not in the Internet 

If that's the case, how can the base.tgz be correctly created?

Henning