Entirely clean away docker from a Ubuntu system

docker-cleanup.sh

sudo apt-get purge -y docker-ce
sudo apt-get autoremove -y --purge docker-ce
sudo apt-get autoclean
sudo rm -rf /var/lib/docker
sudo find /var -name '*docker*' -print -exec rm -rf \{\} \;
sudo find /etc -name '*docker*' -print -exec rm -rf \{\} \;
sudo find /run -name '*docker*' -print -exec rm -rf \{\} \;
echo "Done!"