faq.md

@@ -13,6 +13,7 @@
         - [Enabling CI on a gitlab project](#enabling-ci-on-a-gitlab-project)
         - [Installing runners](#installing-runners)
         - [Register a runner in your project](#register-a-runner-in-your-project)
+        - [Use existing runners](#use-existing-runners)
         - [Configurating CI tasks](#configurating-ci-tasks)
     - [Git-LFS is not activated](#git-lfs-is-not-activated)
     - [Merge Request development model and external contributors](#merge-request-development-model-and-external-contributors)
@@ -66,7 +67,7 @@ tasks themselves) and then register the runner with your project.
 * Go to your project's settings
 * In the *General* *Permissions* tab, search for "Pipelines", and check the permission is not "Disabled"
 * Then a *CI / CD* tab should now appears in the settings
-* In this *CI / CD* tab, you will find the url and the registration token you will need later, when adding a runner.
+* In this *CI / CD* tab, you will find the url and the registration token you will need later, when adding a specific runner.
 
 ### Installing runners
 
@@ -138,6 +139,10 @@ you should answer `shell` (or `docker` but then see the related subsection below
 
 At the end of this step, your runner should appear in the *Settings > Pipelines* tab of your project.
 
+### Use existing runners
+
+If you don't want to manage runners yourself you can use some existing ones provided by ci.inria.fr where jobs can be executed in docker containers.
+Please contact [the support team](https://gitlab.inria.fr/siteadmin/doc/wikis/home#support) for more information.
 
 ### Configurating CI tasks