Change Docker default data folder location on Linux

move-docker-data.sh

#Stop docker service
sudo service docker stop

#Define the new folder to contain the all the docker data 
sudo nano /etc/docker/daemon.json
{ 
    "data-root": "/path/to/your/new/docker/root"
}

#Copy docker data folder to the same location indicated in data-root field in daemon.json 
sudo cp -rp /var/lib/docker/. "/path/to/your/new/docker/root/"

#Create backup
sudo mv /var/lib/docker /var/lib/docker.old

#Start docker service
sudo service docker start

#Remove backup if docker service started successfully
sudo rm -rf /var/lib/docker.old

#Reload firewall settings (Centos)
firewall-cmd --reload