/**
  * Display a warning if a running imi-conrun as root user
  *
  * @param ConsoleEvent $event
  * @return void
  */
 public function checkRunningAsRootUser(Event $event)
 {
     if ($this->_isSkipRootCheck()) {
         return;
     }
     $config = $event->getApplication()->getConfig();
     if (!$config['application']['check-root-user']) {
         return;
     }
     $output = $event->getOutput();
     if (OperatingSystem::isLinux() || OperatingSystem::isMacOs()) {
         if (function_exists('posix_getuid')) {
             if (posix_getuid() === 0) {
                 $output->writeln('');
                 $output->writeln(self::WARNING_ROOT_USER);
                 $output->writeln('');
             }
         }
     }
 }