code: func DupSecOpt(src string) []string {
  	if src == "" {
  		return nil
  	}
  	con := NewContext(src)
  	if con["user"] == "" ||
  		con["role"] == "" ||
  		con["type"] == "" ||
  		con["level"] == "" {
  		return nil
  	}
  	return []string{"label:user:" + con["user"],
  		"label:role:" + con["role"],
  		"label:type:" + con["type"],
  		"label:level:" + con["level"]}
  }
docs: // DupSecOpt takes an SELinux process label and returns security options that
  // can will set the SELinux Type and Level for future container processes