title: How can i shutdown or exit from Docker installed in my Ubuntu 18.04?
body: <p>I wish to start <strong>Xampp</strong> when i switch on my laptop having <strong>Ubuntu 18.04 as OS</strong>. <strong><em>The fact is, Docker already runs when i start my computer</em></strong>. Therefore, it's impossible to start MySql and Apache. <strong>it seems like the port 3306 is already used by Docker</strong>.
  I really to exit from Docker first for me to simply develop my app locally with just Xampp by activating MySql and Apache.
  What are the steps i should follow ?</p>
  
  <p>I'm on <strong>Ubuntu 18.04</strong> with <strong>Docker version 18.09.5</strong></p>
  
  <p>when i type: <strong>sudo /opt/lampp/lampp start</strong></p>
  
  <p><strong>expected results</strong>:
  Starting XAMPP for Linux 7.3.3-1...
  XAMPP: Starting Apache...ok.
  XAMPP: Starting MySQL...ok.
  XAMPP: Starting ProFTPD...ok.</p>
  
  <p><strong>actual result</strong>:
  Starting XAMPP for Linux 7.3.3-1...
  XAMPP: Starting Apache...fail.
  XAMPP:  Another web server is already running.
  XAMPP: Starting MySQL...ok.
  XAMPP: Starting ProFTPD...ok.</p>