PDOException: SQLSTATE[HY000] [2002] php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution in Drupal\Component\DependencyInjection\PhpArrayContainer->createService() (line 79 of /var/www/html/core/lib/Drupal/Component/DependencyInjection/PhpArrayContainer.php).

Drupal\Component\DependencyInjection\PhpArrayContainer->createService(Array, 'database') (Line: 173)
Drupal\Component\DependencyInjection\Container->get('database', 1) (Line: 212)
Drupal\Component\DependencyInjection\PhpArrayContainer->resolveServicesAndParameters(Array) (Line: 62)
Drupal\Component\DependencyInjection\PhpArrayContainer->createService(Array, 'cache.container') (Line: 173)
Drupal\Component\DependencyInjection\Container->get('cache.container') (Line: 545)
Drupal\Core\DrupalKernel->getCachedContainerDefinition() (Line: 911)
Drupal\Core\DrupalKernel->initializeContainer() (Line: 478)
Drupal\Core\DrupalKernel->boot() (Line: 708)
Drupal\Core\DrupalKernel->handle(Object) (Line: 36)