Releasing
This page is for the people who publish Odudu, not for people who run it. If you only run it, you want Deploying and Upgrading.
A release is a tag. Pushing v0.1.0 starts a workflow that builds the image for linux/amd64 and linux/arm64, pushes it with its contents list and build record, signs it, and publishes a GitHub Release with that version's compose.yaml. A tag ending -rc.1 makes a release candidate: it gets its own image tag and a pre-release, and never latest.
The steps are in RELEASING.md: write the changelog, wait for CI on the commit, tag it, push the tag and verify the image. It also says how to yank a release and what only the repository's owner can do.
Odudu is before 1.0, so a minor version may break something. The changelog says what changed in each version.