Current evidence:

• Installed Cloudron CLI: 8.2.2.
• The CLI reports “Build service type: local.”
• A previous update attempt returned HTTP 400 “Missing dockerImage.”
• The local app manifest has no dockerImage field, and no local .cloudron image configuration was found.
• The CLI source contains a source-archive update path, but we have not established whether this is supported by our server version.

Could you clarify:

1. Which CLI version and workflow should we use to build and deploy a custom app from source on Cloudron 10.0.5?
2. Can the Cloudron server accept source and build the app directly, or is a separate build service and/or container registry required?
3. Is there a supported build-only compatibility test that does not install, update, or restart an app?
4. For rollback, does restoring an app backup require the previous Docker image to remain available, and how can we verify that availability beforehand?

We want to avoid another production update attempt until the supported workflow and recovery requirements are clear.