title: How to limit docker image's network usage or bandwidth?
body: <p>How to limit a container's network usage or bandwidth?</p>
  
  <p>I searched the Internet but it seems no existing mature solutions.</p>
  
  <p>I can modify the host, but cannot modify the program running in docker or docker itself. It means I can change the configurations, but not the <em>code</em> of docker that I need to re-build/re-compile.</p>