text: var express = require('express');
  var app = express();
  var MongoClient = require('mongodb').MongoClient;
  var MongoUrl = 'mongodb://mongo:27017/nodock';
  
  app.get('/', function(req, res) {
      MongoClient.connect(MongoUrl, function(err, db) {
          if (err !== null) {
              res.send('Could not connect to MongoDB');
          } else {
              res.send('Connected to MongoDB');
              db.close();
          }
      });
  });
  
  app.listen(8000);
  