title: Remove a Local Docker Image Tag Without Deleting the Image
body: <p>I'm new on the containers world and I recently have started with <em>Docker</em>. But I'm having some issues, and I couldn't find a solution ( at least one I understand minimally).
  So, here's the problem:</p>
  
  <ul>
  <li>I want to <strong>delete</strong> a local image tag ("repository"/"tag" combination). Is it possible?</li>
  <li>How can I, having multiple TAGs associated with just one image ID, delete any of these TAGs without deleting the others? In my case, I just wanna to exclude the <em>hiworld</em> repository. I'm able to delete the image and therefore all the TAGs associated with, but this is not what I want to do. <strong>Below</strong> is what is displayed when I enter  the command <em>docker images</em>.</li>
  </ul>
  
  <pre>
  REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
  helloworld1         latest              8916c2510f76        3 hours ago         148MB
  hiworld             latest              8916c2510f76        3 hours ago         148MB
  </pre>
  
  <p>Thanks in advance.</p>