chore: add environment variable for Docker build context in docker-co…

…mpose.yml

- Introduced DOTENV_KEY environment variable to the Docker build context for improved configuration management.
- Ensured that the application can access necessary environment variables during the build process.

docker-compose.yml

@@ -3,6 +3,8 @@ services:
     image: ghcr.io/fearandesire/pluto-betting-bot:latest
     build:
       context: .
+      environment:
+        - DOTENV_KEY=${PLUTO_DOTENV_KEY}
     volumes:
       - .env.vault:/app/.env.vault
       - ./Khronos-Swagger-Spec-v1.json:/app/Khronos-Swagger-Spec-v1.json