That was easier that I thought.

Installation had a little glitch, when creating user 'nodebb' and 'redis, i.e.:

"pw: user 'redis' disappeared during update"

which I fixed with:

pwd_mkdb /etc/master.passwd

I have now NodeBB v1.2.0 installed on a dedicated server, for now served from port 4567.

Install time: less than 10 minutes.

Thank you!