Automatically Sign Docker Images/Tags in GitLab CI

How do I automatically sign Docker tags within a GitLab CI job when publishing to GitLab’s Docker registry?

I’d like to take advantage of Docker’s Content Trust feature -

I would like to automatically sign images/tags for the following repository as part of its CI pipeline -

Have you found any solutions?

To be honest, I have not actively continued my search for a solution. After my initial up-front efforts, I put the project on hold while I prioritized other work.

I’ll say that I’ve kept an eye on each month’s release notes for GitLab and I haven’t seen any mention of docker image signing.