title: passing parameters to app on docker image
body: <p>I was looking around and I saw some simple examples of HelloWorld running on a docker container like this one: 
  <a href="http://dotnet.dzone.com/articles/docker-%E2%80%98hello-world-mono" rel="nofollow">http://dotnet.dzone.com/articles/docker-%E2%80%98hello-world-mono</a></p>
  
  <p>at the end of the Dockerfile, the author calls:</p>
  
  <pre><code>CMD     ["mono", "/src/hello.exe"]
  </code></pre>
  
  <p>What I want to do is have a reusable image as we build our Console App.  Put that on a docker image using a Dockerfile.  That part makes sense to me.  But then I want to be able to pass the ConsoleApp  parameters.   Is that possible?</p>
  
  <p>for example,</p>
  
  <pre><code>sudo docker run crystaltwix/helloworld -n "crystal twix" 
  </code></pre>
  
  <p>where -n was a parameter I defined in my helloworld app.</p>