title: what is docker purge/clean data do?
body: <p>in my mac i have dashboard menu in docker application, when my images increases alot then i usually reset my docker by purge my whole docker environment with this app.</p>
  <p>i usually open docker -&gt; dashboard -&gt; move to troubleshot -&gt; clean / purge data,
  and voila all image, container, volume, network is clean purely.</p>
  <p>i sometime use other command like docker system prune all but it do less then purge / clean data above.</p>
  <p>would any one could explain to me what docker purge/clean data do so i can make bash file instead of click menu by menu?</p>