title: Custom domain on Openshift Nodejs App doesnt show up. [+process.env.OPENSHIFT_APP_DNS]
body: <p>I run a ghost blog on openshift, i created with success custom domains for my site and everything works nice, but the subscribe link as some other links in my menu points to my openshift url <code>ghost-nodejs.rhcloud.com</code> than to my custom domain  <code>my-blog.com</code>.</p>
  
  <p>After i cloned the git repo on my machine, i opened the <code>config.js</code> and changed the <code>url: 'http://my-ghost-blog.com',</code> to my custom domain <code>url: 'http://my-blog.com',</code> but nothing changes. I also later changed <code>production: {
          'url: 'http://'+process.env.OPENSHIFT_APP_DNS,</code> to my custom domain but that change made my blog not work at all. ( I completely remove the +process.env.OPENSHIFT_APP_DNS part)</p>
  
  <p>Can someone guide me on this?</p>
  
  <p>PS: The git commands i use are <code>git clone ssh//*****</code> i alter some stuff locally and then i run 
  <code>git add -A</code> then <code>git commit -a -m 'alter my app'</code> and finally <code>git push</code></p>