title: Why doesn't Docker support multi-tenancy?
body: <p>I watched <a href="https://www.youtube.com/watch?v=vb7U_9AO7Ww" rel="noreferrer">this YouTube video on Docker</a> and at 22:00 the speaker (a Docker product manager) says:</p>
  
  <blockquote>
    <p>"<em>You're probably thinking 'Docker does not support multi-tenancy'...and you are right!</em>"</p>
  </blockquote>
  
  <p>But never is any explanation of why actually given. So I'm wondering: what did he mean by that? <strong>Why Docker doesn't support multi-tenancy?!</strong> If you Google "Docker multi-tenancy" you surprisingly get nothing!</p>