Update docker-compose file for expected configuration on 2.4.0.

[apw1388]

B2SHARE 2.4.0 expects SUPPORT_MAIL parameter which is missing in docker compose file.

[2024-12-20 12:18:58,840] ERROR in factory: Configuration variable expected: SUPPORT_EMAIL                                                                                                                                        
[2024-12-20 12:18:58,840] ERROR in factory: MAIL_SUPPRESS_SEND must be set to False for a production instance     

Without this parameter B2SHARE 2.4.0 does not start and gives an error. Please update the docker-compose file.