title: Save file to host from docker container
body: <p>I've an app running inside a linux alpine docker image.</p>
  
  <p>How can I "bind" my host machine directory (EX: /root/my_files) to docker, to make it save the files in my host machine, instead of saving inside docker ( which make me lose all files everytime it rebuilds ).</p>
  
  <p>Thanks!</p>