gistfile1.txt

//no Module.php
/**
 * Retorna a configuração do service manager do módulo
 * @return array
 */
public function getServiceConfig()
{
    return array(
        'factories' => array(
            'Admin\Service\Auth' => function($sm) {
                $dbAdapter = $sm->get('DbAdapter');
                return new Service\Auth($dbAdapter);
            },
        ),
    );
}