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supervisor/tests/backups
Stefan Agner e630ec1ac4 Include Docker registry configurations in backups (#6674)
* Include Docker registry configurations in backups

Docker registry credentials were removed from backup metadata in a prior
change to avoid exposing secrets in unencrypted data. Now that the encrypted
supervisor.tar inner archive exists, add docker.json alongside mounts.json
to securely backup and restore registry configurations.

On restore, registries from the backup are merged with any existing ones.
Old backups without docker.json are handled gracefully.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* Increase test coverage by testing more error paths

* Address review feedback for Docker registry backup

Remove unnecessary dict() copy when serializing registries for backup
since the property already returns a dict.

Change DockerConfig.registries to use direct key access instead of
.get() with a default. The schema guarantees the key exists, and
.get() with a default would return a detached temporary dict that
silently discards updates.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

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Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-30 18:34:27 +02:00
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