doctrine2/tools/sandbox/cli-config.php

<?php

require_once __DIR__ . '/../../lib/Doctrine/Common/ClassLoader.php';

$classLoader = new \Doctrine\Common\ClassLoader('Entities', __DIR__);
$classLoader->register();

$classLoader = new \Doctrine\Common\ClassLoader('Proxies', __DIR__);
$classLoader->register();

$config = new \Doctrine\ORM\Configuration();
$config->setMetadataCacheImpl(new \Doctrine\Common\Cache\ArrayCache);
$config->setProxyDir(__DIR__ . '/Proxies');
$config->setProxyNamespace('Proxies');

$connectionOptions = array(
    'driver' => 'pdo_sqlite',
    'path' => 'database.sqlite'
);

$em = \Doctrine\ORM\EntityManager::create($connectionOptions, $config);

$helperSet = new \Symfony\Components\Console\Helper\HelperSet(array(
    'db' => new \Doctrine\DBAL\Tools\Console\Helper\ConnectionHelper($em->getConnection()),
    'em' => new \Doctrine\ORM\Tools\Console\Helper\EntityManagerHelper($em)
));