web.js

console.log('starting the web server!');

const http = require('http');
const _env = parseInt(process.env.PORT, 10);
const PORT = _env ? _env : 80;

http.createServer(function (req, res) {
  console.log(`Req: ${req.url}`);
  res.writeHead(200, {'Content-Type': 'text/plain'});
  res.end('hello world');
}).listen(PORT, function () {
  console.log('Start to listen!');
  console.log( JSON.stringify( [].slice.apply(arguments, [0]) ) );
});