Step 1 : Uninstall docker “sudo yum remove docker”Step 2 : remove all docker folder“sudo rm -rf /var/lib/docker”“sudo rm -rf /var/run/docker”“sudo rm /var/run/docker.*” (remove docker.sock, docker.pid files) Step 3 : Reinstall docker “sudo yum install docker”Step 4 : Start docker “sudo service docker start”