Move BFBC2 Master container

[jonakoudijs]

The old repository still contains the Dockerfile and configuration for the BFBC2 master container. This needs to be migrated still to either this repository or (more likely) its own repository.

The code: https://github.com/lanlords/docker/tree/main/system/bfbc2-master.

[jonakoudijs]

Created Docker repository: https://hub.docker.com/repository/docker/lanlords/bfbc2-master/general