title: Symfony 4.4.18 debug toolbar not showing in local docker host
body: <p>I have created a full symfony project (composer create-project composer create-project symfony / website-skeleton myproj &quot;^ 4.4.18&quot;).</p>
  <p>After having configured the environment variables (trusted_host, database_url, etc ...).</p>
  <ol>
  <li><p>If I run php -S 127.0.0.1:8000 -t public /
  =&gt; Everything works perfectly. I have the symfony welcome page with the debug toolbar
  <a href="https://i.stack.imgur.com/dgTUU.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/dgTUU.png" alt="enter image description here" /></a></p>
  </li>
  <li><p>On the other hand, if I access it from a host in my local docker workspace (I use nginx): everything appears fine like the other EXCEPT the debug toolbar
  <a href="https://i.stack.imgur.com/oydEK.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/oydEK.png" alt="enter image description here" /></a></p>
  </li>
  </ol>
  <p>I have this error in my console. I don't know if it concerns</p>
  <p><a href="https://i.stack.imgur.com/Fak5j.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Fak5j.png" alt="enter image description here" /></a></p>
  <p><em><strong>While for the docker environment, the php is in version 7.4.14 and with an xdebug v3.0.1 installed and activated.</strong></em></p>
  <p>and I even made sure that /var/cache/ was in chmod -R 777.</p>
  <p>could someone help me display this debug toolbar?</p>