Ruby - Starting localhost server to serve files in local folder

Sometimes we want to start a server locally to serve a local folder with some assets (html, css, js) using, using ruby it is easy, just run a:

ruby -run -ehttpd . -p8000

and it is done, you can access your local files using a http://localhost:8000.

If you want to make it accessible through internet you can use the ngrok.com service. So just make the combination of

ruby -run -ehttpd . -p8000 & \
ngrok http 8000

This way you will serve current folder in localhost:8000 and ngrok will make a tunnel through internet.