title: How to provide user defined argument and value in docker run?
body: <p>I want to achieve something like
  docker run   --delay=</p>
  
  <p>I could provide the value for delay using ENTRYPOINT AND CMD without providing argument in docker run but could not find a way to do from docker run.</p>
  
  <p>In short, I want to know how to pass user defined argument and value to docker run command or using dockerfile</p>