- Multi-stage Dockerfile with non-root nodejs user
- Healthcheck using Node 20 built-in fetch (no wget)
- docker-entrypoint.sh: root permission fix, then exec to nodejs
- server/db.js: deferred SQLite init for Docker volume permissions
- docker-compose.yml with named volumes for persistence
- .dockerignore and .env.example added
- README updated with Docker usage section
Security reviewed by Private Hudson. All blockers resolved.