Install docker for Ubuntu16

install_docker_for_ubuntu16.sh

#! /bin/sh -x

# (from: https://soralab.space-ichikawa.com/2017/04/docker-ce-install/)

sudo apt-get update
sudo apt-get install -y\
    apt-transport-https \
    ca-certificates \
    curl \
    software-properties-common
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
sudo add-apt-repository \
       "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
       $(lsb_release -cs) \
       stable"
sudo apt-get update
sudo apt-get install -y docker-ce
sudo docker run hello-world
sudo groupadd docker
sudo usermod -aG docker $USER

Run the following to install

curl https://gist.githubusercontent.com/nwtgck/79c04a16480c039166fcf061e77ceb8e/raw/eaab091e619f81bad5d5554351e4ee13ac901c45/install_docker_for_ubuntu16.sh | sh

After that, reboot your machine.

少し新しくなってるので、
https://docs.docker.com/install/linux/docker-ce/ubuntu/
を見て更新したほうがよいかも