/**
  * @param PreExecuteEvent $event
  *
  * @throws \Exception
  */
 public function onPreExecute(PreExecuteEvent $event)
 {
     $process = $event->getProcess();
     foreach ($this->environmentVariableRepository->getEnvironmentVariables() as $row) {
         list($key, $value) = explode('=', $row);
         $process->setEnv([$key => $value]);
     }
 }