- Every channel has a block of its own, every version after this one reads only these blocks
- Every stable sync also fills the coolify and traefik keys older instances read
- An instance keeps a copy of versions.json and reads upstream.json of the image until it has one
- Adds the channels stable, preview, nightly and custom
- Preview and nightly read /coolify/release.json on the CDN and take the newest version of their channel and the more stable ones, nightly gets a new build of next or the release branch twice a day
- Custom installs any image tag of ghcr.io by hand, such as pr-1234 for the build of pull request 1234
- After a switch to a more stable channel, the instance keeps the updates of the channel it left until the stable release of its version is out
- The local versions.json moves to storage/app and is replaced in one step, a channel change replaces it without the version of the old channel
- Retry CDN requests only for transient errors and honor Retry-After
(Cloudflare error 1200 sends 60 s), with jitter.
- Read helper and Sentinel versions from the local versions.json, which
the hourly update check refreshes, instead of fetching per job/server.
- Replace the random 0-600 s delay with a stable per-instance offset
inside the cron interval (max 1 h).
- Manual update checks and upgrades make one CDN attempt only.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>