docker for ubuntu安装

添加apt仓库

sudo apt-get -y install apt-transport-https ca-certificates curl

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

安装Docker CE Stable版 本

sudo apt-get install docker-ce

验证安装 

sudo docker run hello-world