title: how to remove an ENV setting from a docker image
body: <p>I have a docker image which sets HOME and PATH:</p>
  
  <pre><code>[{
    ...
    "config": {
      "HOME=/",
    }
    ...
  </code></pre>
  
  <p>I know I can replace it, but is it possible to remove it (and let the normal bash profile settings be used instead). I'd prefer not to hack the shell profile files to override it.</p>