docker pull下载镜像报错解决

Get https://registry-1.docker.io/v2/library/apline/manifests/latest: net/http: TLS handshake timeout

1、安装dig工具：【yum install bind-utils】

2、查找可用映射：【dig @114.114.114.114 registry-1.docker.io】
;; ANSWER SECTION:
registry-1.docker.io.  48  IN  A  52.87.94.70
registry-1.docker.io.  48  IN  A  54.165.149.19

3、添加映射：【vim /etc/hosts】
54.165.149.19 registry-1.docker.io