Just follow below steps
% sudo yum check-update . . . % sudo yum install docker . . . % sudo systemctl start docker . . . % sudo systemctl enable docker |
You can check if your docker daemon is working correctly by following command line:
% sudo systemctl status docker0 |
Following link provides pretty good information on Centos
https://phoenixnap.com/kb/how-to-install-docker-centos-7