Do not include the same information in multiple places. Link to a SSOT instead.

There is a temptation to summarize the information on another page. This will cause the information to live in two places. Instead, link to the SSOT and explain why it is important to consume the information

With a single file in the repository, everyone with read access can see the contents, making it much more inviting to improve and review the build scripts.

Code Owners allows for a version controlled single source of truth file outlining the exact GitLab users or groups that own certain files or paths in a repository.