relocate docker default location

steps

1. stop docker

    $ systemctrl stop docker
   

2. custom docker daemon options

    $ nano /etc/docker/daemon.json
   
    {
        "graph": "/home/lib/docker",
        "storage-driver": "overlay"
    }
   

3. backup /var/lib/docker

    $ tar -zcC /home/lib/var.lib.docker-$(date +%Y%m%d%H%M%S).tar.gz /var/lib/docker
    $ tar czvf var.lib.docker-$(date +%Y%m%d%H%M%S).tar.gz /var/lib/docker
   

4. move to new location

    $ mv /var/lib/docker /home/lib/
   

5. start docker

    $ systemctrl stop docker