title: Allow Docker strategy in Openshift 3
body: <p>I'm trying to understand the new OpenShift system and now we have push images to it. I know a little about Docker and I wanted to use it. I read in some places that we can chose Docker as a strategy.</p>
  
  <p>So basically I created an image based on <code>httpd</code> and a basic html file and tried to push it with the following command from the project folder: </p>
  
  <pre><code>oc new-app . --strategy=docker
  </code></pre>
  
  <p>I get this message on console: </p>
  
  <blockquote>
    <p>error: buildconfigs.build.openshift.io "openshift" is forbidden: build strategy Docker is not allowed</p>
  </blockquote>
  
  <p>What do I have to do to allow it? I don't see a good explanation anywhere...</p>