解决docker容器内报错curl: (6) Could not resolve host: www.baidu.com

一、查看宿主机dns

[root@localhost ~]# cat /etc/resolv.conf
# Generated by NetworkManager
nameserver 114.114.114.114
nameserver 8.8.8.8

二、将dns配置到/etc/docker/daemon.json

"dns": ["114.114.114.114","8.8.8.8"]

三、重启docker 

[root@localhost ~]# systemctl daemon-reload
[root@localhost ~]# systemctl restart docker

四、启动容器验证