Ubuntu 16.04 LTS にdockerをインストールする
sudo apt-get update
apt-get install -y software-properties-common
sudo apt-get install apt-transport-https ca-certificates curl software-properties-common
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
sudo apt-key fingerprint 0EBFCD88
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 docker-ce
docker --version