doctrine:
   dbal:
     url: '%env(resolve:DATABASE_URL)%'
 
     # IMPORTANT: You MUST configure your db driver and server version,
     # either here or in the DATABASE_URL env var (see .env file)
     #driver: 'mysql'
     #server_version: '5.7'
 
     # Only needed for MySQL (ignored otherwise)
     charset: utf8mb4
     default_table_options:
       collate: utf8mb4_unicode_ci
   orm:
     auto_generate_proxy_classes: true
     naming_strategy: doctrine.orm.naming_strategy.underscore_number_aware
     auto_mapping: true
     mappings:
       App:
         is_bundle: false
         type: annotation
         dir: '%kernel.project_dir%/src/Entity'
         prefix: 'App\Entity'
         alias: App