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Updates
Contained has two update systems: Sparkle app updates and registry image update checks.
Signed distribution builds use Sparkle. Development bundles are inert until a signed build points at a published appcast feed.
Channels are selected in Settings → Updates:
| Channel | Feed |
|---|---|
| Stable | stable/appcast.xml |
| Beta | beta/appcast.xml |
| Nightly | nightly/appcast.xml |
Each appcast lives at the root of its branch and is served by
raw.githubusercontent.com. The selected feed is the channel, so appcast items
do not need Sparkle channel tags.
Fresh installs default to Nightly during pre-1.0 development.
Release notes come from CHANGELOG.md. The release scripts embed matching notes
into Sparkle appcasts and the app can show:
- What's New in This Build
- What's New in an available update
Pre-release versions such as 1.0.0-nightly.N+sha resolve notes from the base
1.0.0 changelog section.
Image update checks compare local image digests with remote registry digests. Results are stored locally and surface on image cards, container cards, toolbar panels, palette results, and System.
Manual checks are available from Images, System, toolbar actions, and the command palette. Background check cadence is set in Settings → Updates → Image updates.
Contained — source-available under PolyForm Noncommercial 1.0.0. Free for non-commercial use.