Streamlined Dockerfiles with clearer ENV variables and build args. Switched backend database from MySQL to PostgreSQL, updated configurations accordingly, and added robust Docker Compose services for better orchestration, including health checks and persistent storage.
Refactored database and server configuration to handle environments (dev, test, prod) explicitly, including tailored database setup and SSL management. Separated slot and sample data loading for better control during initialization. Improved environment variable usage and error handling for production certificates.
