Need advice for adding opencontainers annotations to Google's distroless images

[joebowbeer]

I'm in the process of adding opencontainers annotations to theses distroless images:

GoogleContainerTools/distroless#2111 (comment)

I have a PR in progress to add annotations to NodeJS images, and may also add annotations to Java and other distroless images.

What annotations should be added in order to be most useful to dependabot?

https://github.com/joebowbeer/distroless/blob/9bfd5114e579a0ab49a3b303109cd7615c8cac6a/nodejs/nodejs.bzl#L53-L57

Is a custom annotation useful? com.google.distroless.nodejs.version

I hope a dependabot dev maintainer can weigh in here in addition to anyone else.

[joebowbeer]

Similar question for renovate: renovatebot/renovate#44208