Use Overlay storage engine on Centos

Enable Overlay storage in kernel

$ sudo tee /etc/modules-load.d/overlay.conf <<-'EOF'
overlay
EOF

Reboot

Verify that OverlayFS is enabled

$ lsmod | grep overlay
overlay

Enable OverlayFS in docker

$ sudod vim /usr/lib/systemd/system/docker.service
/usr/bin/docker daemon -H fd:// --storage-driver=overlay 

Restart Docker

$ sudo systemctl restart docker
$ docker info