docker报错——docker_Error response from daemon_Get “https://registry-1.docker.io/v2/“
从docker的hub库中拉取镜像时报错，具体如下：
docker: Error response from daemon: Get “https://registry-1.docker.io/v2/”: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers).
See ‘docker run --help’.
在https://www.cnblogs.com/liujunjun/p/18546650中找到解决方法，经过测试成功解决问题，具体步骤如下：
修改配置文件 /etc/docker/daemon.json，修改后内容如下：
{
"runtimes": {
"nvidia": {
"args": [],
"path": "nvidia-container-runtime"
}
},
"registry-mirrors": ["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"]
}
修改后配置文件，重启docker服务，命令如下：
sudo systemctl daemon-reload
sudo systemctl restart docker
