在CompilerPass类中获取实体管理器

Question

我创建了CompilerPass类，以将数据库中的某些数据设置为参数：

class ParametersCompilerPass implements CompilerPassInterface
{
    public function process(ContainerBuilder $container)
    {
        $em = $container->get('doctrine.orm.default_entity_manager');
        $params = $em->getRepository(Setting::class)->findAll();
    }
}

但我收到此错误：

An exception occurred in driver: SQLSTATE[HY000] [1102] Incorrect database name 'nv_097f203e25c61d94_resolve_database_url_c9a61b2f5dc3b858f85dcd10be22549a'

当我获得实体经理时，例如通过doctrine.orm.default_entity_manager服务在控制器中运行一切正常。

doctrine.yaml：

parameters:
    env(DATABASE_URL): ''

doctrine:
    dbal:
        driver: 'pdo_mysql'
        server_version: '5.4'
        charset: utf8mb4
        default_table_options:
            charset: utf8mb4
            collate: utf8mb4_unicode_ci

        url: '%env(resolve:DATABASE_URL)%'
    orm:
        auto_generate_proxy_classes: true
        naming_strategy: doctrine.orm.naming_strategy.underscore
        auto_mapping: true
        mappings:
            App:
                is_bundle: false
                type: annotation
                dir: '%kernel.project_dir%/src/Entity'
                prefix: 'App\Entity'
                alias: App