[HOWTO] Quickly get OCIS (Nextcloud alternative) up and running

To those self-hosters who are out there curious if there exists a faster Nextcloud-like alternative without all the bells and whistles. I present to you, OCIS! This howto assumes that you’re running a Linux OS and that you have a reverse proxy like caddy running. To the guy who I suggested checking out OCIS, I wrote this guide...