## GitLab CI Services

GitLab CI uses the `services` keyword to define what docker containers should be
linked with your base image. Below is a list of examples you may use.

+ [Using MySQL](mysql.md)
+ [Using PostgreSQL](postgres.md)
+ [Using Redis](redis.md)
+ [Using Other Services](../docker/using_docker_images.md#how-to-use-other-images-as-services)