Since 2023-10, WikiSuite supports an option to use Ubuntu instead of Debian. This is experimental and (for now) only recommended for developers. We will focus on Ubuntu 22.04 but it should also work with 20.04.
So you can use the same instructions on How to install WikiSuite
This is now possible following a major previous change as explained at blogpost16-WikiSuite-will-now-support-all-major-Linux-distros.