Update Environment Variables in .env.docker

- Removed the `BROADCAST_CONNECTION` and `SESSION_LIFETIME` variables from the `.env.docker` file, streamlining the environment configuration for better clarity and relevance.
- Retained essential Redis configurations for caching and session management, ensuring that the application maintains its performance and functionality.

This change aims to simplify the environment setup by eliminating unnecessary variables that are no longer needed.

api/.env.docker

@@ -12,14 +12,10 @@ LOG_LEVEL=debug
 FILESYSTEM_DRIVER=local
 LOCAL_FILESYSTEM_VISIBILITY=public
 
-BROADCAST_CONNECTION=log
-
-CACHE_STORE=redis
 CACHE_DRIVER=redis
 
 QUEUE_CONNECTION=redis
 SESSION_DRIVER=redis
-SESSION_LIFETIME=120
 
 MAIL_MAILER=log
 MAIL_HOST=