title: How to properly use docker for temporary containers
body: <p>I am creating a project correction software that sanboxes for each student their assignments.
  I was thinking about docker for doing such mechanism but I am having troubles when using docker CLI.</p>
  
  <p>Must I create an image with a name using <code>docker build .</code> before running it ? I would have to remove the image then</p>
  
  <p>I would appreciate any suggestion, thanks</p>