[root@edb ~]# docker info 
Client:
 Debug Mode: false

Server:
 Containers: 0
  Running: 0
  Paused: 0
  Stopped: 0
 Images: 2
 Server Version: 19.03.5
 Storage Driver: overlay2
  Backing Filesystem: xfs

.....

 Kernel Version: 3.10.0-1062.4.3.el7.x86_64
 Operating System: CentOS Linux 7 (Core)
 OSType: linux
 Architecture: x86_64
 CPUs: 4
 Total Memory: 7.638GiB
 Name: edb
 ID: 6E7Q:WKTE:GIHH:BHQO:ZPDE:....
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 Registry: https://index.docker.io/v1/
 Labels:
 Experimental: false
 Insecure Registries:
  127.0.0.0/8
 Registry Mirrors:
  https://registry.docker-cn.com/
 Live Restore Enabled: false
vim /usr/lib/systemd/system/docker.service 
[root@edb ~]# vim /usr/lib/systemd/system/docker.service

[Service]
Type=notify
# the default is not to use systemd for cgroups because the delegate issues still
# exists and systemd currently does not support the cgroup feature set required
# for containers run by docker
# ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock
ExecStart=/usr/bin/dockerd --graph /apps/docker -H fd:// --containerd=/run/containerd/containerd.sock
ExecReload=/bin/kill -s HUP $MAINPID
TimeoutSec=0
RestartSec=2
Restart=always
systemctl stop docker.service 

systemctl daemon-reload 

systemctl start docker.service 
[root@edb ~]# docker info 
Client:
 Debug Mode: false

Server:
 Containers: 0
  Running: 0
  Paused: 0
  Stopped: 0
 Images: 1
 Server Version: 19.03.5
 Storage Driver: overlay2
  Backing Filesystem: xfs
  
...

 Docker Root Dir: /apps/docker
 Debug Mode: false
 Registry: https://index.docker.io/v1/
 Labels:
 Experimental: false
 Insecure Registries:
  127.0.0.0/8
 Registry Mirrors:
  https://registry.docker-cn.com/
 Live Restore Enabled: false