在搜索镜像的时候遇到这个问题

[root@localhost /]# docker search nginx
Error response from daemon: Get https://index.docker.io/v1/search?q=nginx&n=25: dial tcp: lookup index.docker.io on [::1]:53: read udp [::1]:40240->[::1]:53: read: connection refused

解决方法

 vim /etc/resolv.conf

填入：

nameserver 114.114.114.114