Docker command is not available, turn SELinux off

Run "systemctl start Docker.service" Error
Job for Docker.service failed because the control process exited with error code. See "Systemctl Status Docker.service" and "Journalctl-xe" for details. '

Run ' Docker ps ' ERROR '
Cannot connect to the Docker daemon at Unix:///var/run/docker.sock. Is the Docker daemon running? '
Turn off SELinux to
The procedure is as follows:
[Email protected] ~]# Getenforce
Enforcing
[Email protected] ~]# Setenforce 0
[Email protected] ~]# Getenforce
Permissive
[Email protected] ~]# systemctl start Docker.service
Job for Docker.service failed because the control process exited with error code. See "Systemctl Status Docker.service" and "Journalctl-xe" for details.

[[email protected] ~]# vi/etc/selinux/config modify selinux=disabled reboot system
[[Email protected] ~]# Init 6
Last Login:mon 06:12:24 2018 from 192.168.1.105
[Email protected] ~]# systemctl status Docker.service
[[email protected] ~]# Docker PS
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES

Docker command is not available, turn SELinux off