Re:Zulip Server 1.6 released
by aero31aero on Saturday June 10, 2017 @01:36PM
(#14528252)
It might not have been obvious, but for installation, you should use a dedicated machine or virtual machine.
That would mean your concerns regarding /root would be solved automatically.
however a cursory review of the codebase indicates that most of the services run as the zulip user and authentication uses certificates rather than passwords.