Migrations in Docker fell back to the additive-column self-heal because alembic.ini was never copied; the real migration chain now runs. The HEALTHCHECK covers plain docker-run (compose files keep their own), with a start period sized for first-boot schema creation. Docs example tag freshened. Co-authored-by: mergetest <test@local> Co-authored-by: Claude Fable 5 <noreply@anthropic.com>