$openstack = new OpenStack\OpenStack([
          'authUrl' => 'https://auth.cloud.ovh.net/v3',
          'region'  => 'GRA1',
          'user'    => [
              'name' => 'username',
              'domain'    => ['id' => 'default'],
              'password' => 'my-password'
          ],
          'scope'   => ['project' => ['id' => 'tenantId']]
      ]);

      $container = $openstack->objectStoreV1()
                             ->getContainer('images');