title: docker command not found even though installed with apt-get
body: <p>Adding this for reference for others because it would have saved me 10 minutes if such an answer existed.</p>
  
  <hr>
  
  <p>I tried installing Docker using ubuntu 14.0LTS virtualbox</p>
  
  <p><code>sudo apt get install docker</code></p>
  
  <p>However, when I try running docker it gives me the following error</p>
  
  <p><code>The program 'docker' is currently not installed. You can install it by typing:
  sudo apt-get install docker</code></p>
  
  <p>Why is ubuntu not seeing docker?</p>