listen to port from azure

server.js

@@ -1,7 +1,7 @@
 var express = require('express');
 var S = require('string');
 var app = express();
-
+var port = process.env.PORT || 3000;
 
 app.get('/*', function (req, res) {
   var host = S(req.headers.host);
@@ -21,7 +21,7 @@ app.get('/*', function (req, res) {
   res.end("Error no redirects found");
 });
 
-var server = app.listen(3000, function () {
+var server = app.listen(port, function () {
   var host = server.address().address;
   var port = server.address().port;