1.  在配置文件中增加国内的源：

	vi /etc/docker/daemon.json

	添加如下内容：

{
       "registry-mirrors": [
          "https://2a6bf1988cb6428c877f723ec7530dbc.mirror.swr.myhuaweicloud.com",
          "https://docker.m.daocloud.io",
          "https://hub-mirror.c.163.com",
          "https://mirror.baidubce.com",
          "https://your_preferred_mirror",
          "https://dockerhub.icu",
          "https://docker.registry.cyou",
          "https://docker-cf.registry.cyou",
          "https://dockercf.jsdelivr.fyi",
          "https://docker.jsdelivr.fyi",
          "https://dockertest.jsdelivr.fyi",
          "https://mirror.aliyuncs.com",
          "https://dockerproxy.com",
          "https://mirror.baidubce.com",
          "https://docker.m.daocloud.io",
          "https://docker.nju.edu.cn",
          "https://docker.mirrors.sjtug.sjtu.edu.cn",
          "https://docker.mirrors.ustc.edu.cn",
          "https://mirror.iscas.ac.cn",
          "https://docker.rainbond.cc"
          ]
      }


2. 重启docker

	systemctl daemon-reload
	systemctl restart docker

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