update-docker.bash

#!/bin/bash
apt-get update
apt-get install -y apt-transport-https
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add -
cat <<EOF >/etc/apt/sources.list.d/docker.list
deb [arch=amd64] https://download.docker.com/linux/ubuntu xenial stable
EOF

apt-get update

apt-get install -y docker-ce

systemctl stop docker
modprobe overlay
echo '{"storage-driver": "overlay2"}' > /etc/docker/daemon.json
rm -rf /var/lib/docker/*
systemctl start docker