message: Updating summary.md.
diff: * [Services](drupal/services/README.md)
  * [MariaDB](drupal/services/mariadb.md)
  + * [Redis](drupal/services/redis.md)
  + * [Solr](drupal/services/solr.md)
  * [Varnish](drupal/services/varnish.md)
  +
  * [Step by Step: Getting Drupal ready to run on Lagoon](drupal/step-by-step-getting-drupal-ready-to-run-on-lagoon.md)
  * [Drush 9](drupal/drush-9.md)
  * [First Deployment of Drupal](drupal/first-deployment-of-drupal.md)
  