Fix cost page: unify background colors and width

docker-compose.production.yml

@@ -26,10 +26,11 @@ services:
       - "8000:8000"
     environment:
       - ENV=production
+    env_file:
+      - ./backend/.env
     volumes:
       - ./backend/uploads:/app/uploads
       - backend-prod-data:/app/data
-      - ./backend/.env:/app/.env:ro
     restart: unless-stopped
     networks:
       - autonet-production
@@ -42,7 +43,6 @@ services:
     environment:
       - ENV=production
     volumes:
-      - ./agent/.env:/app/.env:ro
       - agent-data:/app/data
       - agent-logs:/app/logs
     restart: unless-stopped