title: Unmount nginx server from port 8081
body: <p>I would like to know how to unmount nginx server that appears on my port 8081.</p>
  <p>I used this command:</p>
  <p><code>docker run -d --name server -p 8081:80 nginx </code></p>
  <p>However, I already stopped and removed nginx server with docker and deleted the image, but I still have port 81 busy with the server.</p>
  <p><a href="https://i.stack.imgur.com/Y5gca.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Y5gca.png" alt="enter image description here" /></a></p>