\yii\db\Connection::class, 'dsn' => 'mysql:host=db;dbname=${DB_NAME}', 'username' => '${DB_USER}', 'password' => '${DB_PASS}', 'charset' => 'utf8', // Schema cache options (for production environment) //'enableSchemaCache' => true, //'schemaCacheDuration' => 60, //'schemaCache' => 'cache', ];