title: runc container start go-lang deattached mode
body: <p>I'm testing runc container start time using an automatic go lang script
  my code is like below and it keep blocking the process even that it runs without blocking in shell.</p>
  
  <pre><code>    command := exec.Command("runc","start","-d","redis")
      command.Dir = "/containers/redis"
      start := time.Now() 
      r,err:=command.CombinedOutput()
      duration:= time.Since(start)/time.Millisecond
      fmt.Println(duration)   
      fmt.Println(err) 
      fmt.Println(string(r))
  </code></pre>