title: Bind for 0.0.0.0:6543 failed: port is already allocated (it's not)
body: <p>I'm trying to start a docker project and get this error:</p>
  <pre><code>Bind for 0.0.0.0:6543 failed: port is already allocated
  </code></pre>
  <p>A <code>netstat -ano | findstr :6543</code> search returns nothing as does a <code>docker container ls</code>.</p>
  <p>How do I free up that port?</p>