Docker Toolbox (Client.Timeout exceeded while awaiting headers)

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)
笔记本是家庭版，ennnnn就入坑了
解决方案：

docker-machine ssh default
sudo sed -i "s|EXTRA_ARGS='|EXTRA_ARGS='--registry-mirror=加速地址 |g" /var/lib/boot2docker/profile
exit
docker-machine restart default