Better usage documentation with examples

[aj-may]

As @mkinney pointed out, the docs do not explain how the host based routing is configured for a container.

The README should contain more information about how the routes is configured automatically for a docker-compose project, as well as how to manually set a domain name using the VIRTUAL_HOST environment variable. https://github.com/jwilder/nginx-proxy is a good reference.

It would also be nice to provide a few examples.

[mkinney]

You could borrow something from https://tecadmin.net/install-latest-nodejs-npm-on-ubuntu/ like this snippet:

var http = require('http');
http.createServer(function (req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  res.end('Hello World\n');
}).listen(3000, "127.0.0.1");
console.log('Server running at http://127.0.0.1:3000/');