- Create config directory and create a config file
sudo mkdir /etc/systemd/system/docker.service.d/
sudo nano /etc/systemd/system/docker.service.d/custom.conf
Contents of that file should be:
[Service]
ExecStart=
ExecStart=/usr/bin/dockerd -g YOUR_DESIRED_DOCKER_IMAGE_ROOT_HERE
- Restart docker service:
sudo systemctl daemon-reload
sudo systemctl restart docker