Trigger a pipeline's job with a specific comment/note (ex: /trigger pipeline job)

Hey,
I’d like to trigger a pipeline’s job when I leave a specific comment/note on a MR (ex: /trigger pipeline job).

Do you how if this is possible?

I don’t see anything related to it here: Choose when to run jobs | GitLab

I know I can use webhook so that it triggers a pipeline job but it’ll trigger for each comment/note posted on all MR.

Thanks for your help,
Alexandre