title: Docker logs not showing colors (express + nodejs image)
body: <p>A petty, yet interesting question (for me): </p>
  
  <p>I'm trying to create docker image from a small server( nodejs + express) I wrote. My server code is:</p>
  
  <pre><code>var express = require('express');
  var Inflector = require('inflected');
  var colors = require('colors');
  
  var app = express();
  
  app.get('/hello/:name', function(req, res, next){
      var name = Inflector.titleize(req.params.name);
      console.log("Saying hello to " + name.yellow);
      res.send('Hello ' + name);
  });
  
  var port = 9090;
  app.listen(port, function(){
      console.log(('App is running on port ' + port).inverse);
  });
  </code></pre>
  
  <p>I'm creating my image with this Dockerfile:</p>
  
  <pre><code>FROM centos:centos6
  
  RUN     rpm -Uvh http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
  
  RUN     yum install -y npm
  
  COPY . /src
  
  RUN cd /src; npm install
  
  EXPOSE 9090
  
  CMD ["node", "/src/index.js"]
  </code></pre>
  
  <p>Building and running the image with the common commands:</p>
  
  <pre><code>docker build -t username:centos-nodejs
  docker run -p 9090:9090 username:centos-nodejs
  </code></pre>
  
  <p>I was expecting the logs to show up with colors in the command line as they do without docker (e.g. <code>node index.js</code>).</p>
  
  <p>What is the cause and can I fix this?</p>