Edit Welcome Page

Hi,

I just quick-installed jitsi-meet on my server and would want to change the welcome page content. What I have done so far is just to remove/change the left watermark and change the favicon. I wanted to put a login form on the welcome page. What file should I edit? Also, is it fine to just clone the react folder going to usr/share/jitsi-meet/ rather that putting in the whole repo from github to etc/?

I checked other topics and saw that I need to upload the repo from github to my etc folder in my server. Is it really necessary?