Module 4 · End-to-end case
A release with a rehearsal and a way back
In short
The export feature from the previous lesson reaches users: owner approval, a migration rehearsal on a schema copy, an image built on a workstation with its architecture checked, the running version tagged, migration before swap, and a way back ready.
After this lesson you can
- Rehearse a schema migration on a schema-only copy of production before release day
- Run a safe release order: build on a workstation, check image architecture, tag the running version, migrate, then swap
- Wait for the owner's explicit approval before merging into the main branch and releasing
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