Install Nginx for your system. This step varies depending on your Linux distro (Windows users be damned).
For Ubuntu this is super easy: sudo apt-get install nginx
For more information:
For AWS EC2, this is a great resource:
https://www.nginx.com/blog/setting-up-nginx/
TIL: You need to add rules to the instance's security group to allow HTTP and HTTPS.
Unfortunately, AWS is blacklisted by Let's Encrypt. Head over to dot.tk
to get a free domain name for you to use as a proxy.