- Replace hardcoded domain with DOMAIN environment variable
- Automatically configure CORS origins based on deployment environment
- Remove localhost origins in production for enhanced security
- Update security documentation to reflect environment-driven config
- Maintains consistency with existing docker-compose.yml patterns
- Replace wildcard CORS origins with restricted domain list
- Add comprehensive security patterns to .gitignore
- Create SECURITY.md with deployment security guidelines
- Restrict CORS methods and headers to minimum required
- Add security documentation for production deployment
