✨ Refactor Docker Configuration and Update Memory Bank

- Simplify the Docker Compose configuration by removing unnecessary volume mappings and ensuring the MySQL port is configurable via the new environment variable `${MYSQL_PORT}`.
- Update the Dockerfile to correctly copy the build artifacts and resources for production.
- Revise activeContext.md and productContext.md to reflect recent changes in the Docker setup and project objectives.
- Enhance projectbrief.md with detailed project goals and scope, emphasizing the use of Docker for consistent development and production environments.

Author: BrightkyEfoo