BKM: Change Docker Data Location

The docker engine by default stores the data (images and containers) under the /var/lib/docker directory. Usually this is a space-limited root partition. Use the following steps to change the docker data directory:

• Create new docker data directory under /home:

sudo mkdir /home/docker
sudo chown root.docker /home/docker
sudo chmod 700 /home/docker

• Modify the docker configuration /etc/docker/daemon.json to point to the new directory:

{
    "graph": "/home/docker"
}

• Restart docker:

sudo systemctl stop docker
sudo systemctl start docker

• Remove the old data directory:

sudo rm -rf /var/lib/docker