Tutorial - https://vpsfix.com/6226/install-manti...
This video shows you how to install latest version of MantisBT on an Ubuntu 16.04 LTS VPS with Virtualmin control panel, PHP 7 and nginx web server (LEMP).
Once you have your VPS configured with step-by-step instructions provided on above tutorial link, getting MantisBT up and running on your VPS is an easy task.
And for those who don't know, MantisBT is a popular open-source web-based bug tracking system. Built on PHP and supports Linux, Windows and Mac OS X on the server side. Compatible with Chrome, Firefox, Safari, Opera and IE 7+. Released under the terms of the GNU General Public License (GPL).