更改 Docker Root Dir

參考 https://ithelp.ithome.com.tw/articles/10235112

參考 https://medium.com/@calvineotieno010/change-docker-default-root-data-directory-a1d9271056f4

$ docker info

$ vi /etc/docker/daemon.json

{

  "data-root": "/path/to/new/docker_data"

}

$ sudo systemctl stop docker

$ sudo systemctl stop docker.socket

$ sudo rsync -avh /var/lib/docker/* /path/to/new/docker_data

$ sudo systemctl start docker

$ sudo systemctl start docker.socket

$ docker info