Running Sinatra on port 80

Question

I installed Sinatra and it works but it uses port 4567 by default. I want it to run on port 80.

In an effort to get it to work on port 80, I tried this:

Answer 1

Yes, running anything other than Apache, Nginx, Varnish or HAProxy or port 80 is in my opiniona dangerous game. Those tools are very good at what they do. A reverse proxy setup is the way to go.