docker執行gunicorn看不到控制檯輸出

version: '2'
services:
xxx.xxx:
image: xxx:1.0
volumes:
- /usr/share/zoneinfo/Asia/Shanghai:/etc/localtime
- ./log/xxx:/var/log/xxx
- ./xxx:/app
ports:
- "5000:5000"
environment:
- FLASK_ENV=development_wyq
command: gunicorn --worker-class eventlet -w 1 xxx:app -b 0.0.0.0:5000# print不寫到控制檯
#command: gunicorn --worker-class eventlet -w 1 xxx:app -b 0.0.0.0:5000 --access-logfile -#print寫到控制檯