title: Ubuntu 16.04 - > ERROR: Couldn't connect to Docker daemon - you might need to run `docker-machine start default`
body: <p>I am getting error on ubuntu 16.04</p>
  
  <blockquote>
    <p>"ERROR: Couldn't connect to Docker daemon - you might need to run
    <code>docker-    machine start default</code>. "</p>
  </blockquote>
  
  <p>when i run following command</p>
  
  <pre><code>sudo docker-compose up
  </code></pre>
  
  <p>Can any one answer ?</p>