Summary

• Document the automatic rollback logic added in Add CD rollback + non-root Dockerfile examples #15 so users can discover it from docs/VPS_DEPLOY.md.
• Explain the trigger (health-check failure during docker compose up -d --wait), what gets restored (previous image, compose file rewritten in place), and the local-cache constraint.
• Add a short "Manually Redeploying a Previous Version" subsection covering GHA re-run and tag-push workflows.

Test plan

• Render docs/VPS_DEPLOY.md on GitHub and confirm the new Rollback subsections read cleanly.
• Confirm existing Quick Rollback / GitHub Actions rollback content is preserved.