连接不上数据库？

试过：docker run -d -p 666:80 -e MYSQL_HOST=IP ---这里的IP是宿主机的IP，还是宿主机的docker网关IP 172.17.0.1？

In Connection.php line 671:

SQLSTATE[HY000] [2002] Connection refused (SQL: select * from user where (email = xx@xx.com) limit 1)