fix: ensure environment variables are loaded correctly in Docker (#49)

* feat: add reverse proxy support with configurable base path and trust proxy settings

* fix: ensure environment variables are loaded correctly in Docker

- Move dotenv config to the top of server.js
- Update docker-compose.yml to properly handle .env file
- Remove duplicate environment variables section

This ensures BASE_PATH and TRUST_PROXY work as expected in both Docker and local environments.

docker-compose.yml

@@ -10,6 +10,7 @@ services:
     restart: always
     ports:
       - "3000:3000"
+    env_file: .env
     environment:
       # Core Configuration
       - BASE_WEBHOOK_URL=http://localhost:3000/localCallbackExample