Add doc type

For CI services examples

4 files changed, 21 insertions, 4 deletions

diff --git a/doc/ci/services/README.md b/doc/ci/services/README.md
index 2eda5d23976..7fe12eb53e7 100644
--- a/doc/ci/services/README.md
+++ b/doc/ci/services/README.md
@@ -1,13 +1,18 @@
 ---
 comments: false
+type: index
 ---
 
-# GitLab CI Services
+# GitLab CI services examples
 
-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.
+The [`services`](../docker/using_docker_images.md#what-is-a-service)
+keyword defines a Docker image that runs during a `job` linked to the
+Docker image that the image keyword defines. This allows you to access
+the service image during build time.
+
+The service image can run any application, but the most common use
+case is to run a database container, for example:
 
 - [Using MySQL](mysql.md)
 - [Using PostgreSQL](postgres.md)
 - [Using Redis](redis.md)
-- [Using Other Services](../docker/using_docker_images.md#what-is-a-service)
diff --git a/doc/ci/services/mysql.md b/doc/ci/services/mysql.md
index 5fa378fc4c2..697452cee83 100644
--- a/doc/ci/services/mysql.md
+++ b/doc/ci/services/mysql.md
@@ -1,3 +1,7 @@
+---
+type: reference
+---
+
 # Using MySQL
 
 As many applications depend on MySQL as their database, you will eventually
diff --git a/doc/ci/services/postgres.md b/doc/ci/services/postgres.md
index 2e6d7ae94d2..211eea26eb0 100644
--- a/doc/ci/services/postgres.md
+++ b/doc/ci/services/postgres.md
@@ -1,3 +1,7 @@
+---
+type: reference
+---
+
 # Using PostgreSQL
 
 As many applications depend on PostgreSQL as their database, you will
diff --git a/doc/ci/services/redis.md b/doc/ci/services/redis.md
index 36f71427ae7..8b227154b06 100644
--- a/doc/ci/services/redis.md
+++ b/doc/ci/services/redis.md
@@ -1,3 +1,7 @@
+---
+type: reference
+---
+
 # Using Redis
 
 As many applications depend on Redis as their key-value store, you will