Hi,
I have a few questions:

Why does your install script require to be run by root?
I do not see anything in bootstrap.sh that cannot be run by sudo.

Also, why can you not use an already created user?
What's so special about the new user created by the script?

I see you have a script for Ubuntu 18.10. Does it work on 18.04 LTS?
Can I run a local network copy of it on my Ubuntu box just so I can try it and learn it?
I would run a couple localnet miners against it to test it out.

Reading from: https://github.com/cryptopool-builders/Multi-Pool-Installer/wiki/Install

Thanks