title: In Docker, what DOCKER_TLS_VERIFY=0 does?
body: <p>I'm running Docker on Windows 10, and I noticed that by default, <code>DOCKER_TLS_VERIFY=0</code>.</p>
  
  <p>I have a few questions about it:</p>
  
  <ol>
  <li>Does it mean that I'm pulling images from Docker Hub insecurly? </li>
  <li>Does Docker pull images through <code>https</code> when it is set to <code>0</code>?</li>
  <li>Is it recommended to set it to <code>1</code>?</li>
  </ol>