First, clone this repo to the server you want to run it on. (run git clone https://github.com/evan-gan/githubAutoPull.git once connected to your server)
Second, run chmod +x ./setup.sh ; ./setup.sh
That's it! (there are more instructions when you run the setup script)
If you don't have a server to run this on you can setup a free forever oracle vm. Here's a nice article I found a while ago that walks you through the process. (Ignore anything Minecraft related but everything else is great!)
If you have any questions feel free to message me :)