Merge branch 'mg-dynamic-child-include-limitation-20240610' into 'master'

Add variable limitation in dynamic child pipelines

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/155837



Merged-by: Marcel Amirault <mamirault@gitlab.com>
Approved-by: Marcel Amirault <mamirault@gitlab.com>
Reviewed-by: Marcel Amirault <mamirault@gitlab.com>
Co-authored-by: Manuel Grabowski <mgrabowski@gitlab.com>

doc/ci/pipelines/downstream_pipelines.md

@@ -226,6 +226,10 @@ syntax for the OS running GitLab. If GitLab is running on Linux but using a Wind
 runner for testing, the path separator for the trigger job is `/`. Other CI/CD
 configuration for jobs that use the Windows runner, like scripts, use <code>&#92;</code>.
 
+You cannot use CI/CD variables in an `include` section in a dynamic child pipeline's configuration.
+[Issue 378717](https://gitlab.com/gitlab-org/gitlab/-/issues/378717) proposes fixing
+this issue.
+
 ### Run child pipelines with merge request pipelines
 
 Pipelines, including child pipelines, run as branch pipelines by default when not using

doc/ci/yaml/includes.md

@@ -390,6 +390,10 @@ so these variables cannot be used with `include`.
 For an example of how you can include predefined variables, and the variables' impact on CI/CD jobs,
 see this [CI/CD variable demo](https://youtu.be/4XR8gw3Pkos).
 
+You cannot use CI/CD variables in an `include` section in a dynamic child pipeline's configuration.
+[Issue 378717](https://gitlab.com/gitlab-org/gitlab/-/issues/378717) proposes fixing
+this issue.
+
 ## Use `rules` with `include`
 
 > - Support for `needs` job dependency [introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/345377) in GitLab 15.11.