Well, I wanted to say that I didn’t experience any other problem. The VM booted fine, after setting the required options I was able to use the web interface as well as synchronising appliances on other devices. The settings area is available, but when I, with the standard owncloud account, try to access the users settings (from the top right corner), I see that ‘internal server error’ o the blue earth-from-space photograph. It seems there is something with the underlying database, but I don’t know enough about the docker technology to check internal logs etc. So I consider to start over, maybe that helps.