code: public function process(ContainerBuilder $container): void
      {
          $webDir = $container->getParameter('contao.web_dir');
          $managerPath = $container->getParameter('contao_manager.manager_path');
  
          if (null === $managerPath) {
              if (is_file($webDir.'/contao-manager.phar.php')) {
                  $managerPath = 'contao-manager.phar.php';
              }
          } elseif (!is_file($webDir.'/'.$managerPath)) {
              throw new \LogicException(
                  sprintf(
                      'You have configured "contao_manager.manager_path" but the file "%s" does not exist',
                      $webDir.'/'.$managerPath
                  )
              );
          }
  
          $container->setParameter('contao_manager.manager_path', $managerPath);
      }
docs: {@inheritdoc}