Installation instructions

Hi, new user here! I use gogs on windows, but would like to move to gitea on linux.

Why do the installation instructions say I need to create a service account with a home directory, logon shell and ssh access (i.e. adduser --home /home/git --shell /bin/bash)?

Typically a service account doesn’t need any of that. Does gitea need those things for something special I don’t know about? If I create a limited service account without those things will gitea break somehow?