Ubuntu16.04安裝Docker

獲取最新安裝包
wget -qO- https://get.docker.com/ | sh
提示

If you would like to use Docker as a non-root user, you should now consider
    adding your user to the "docker" group with something like:
    sudo usermod -aG docker xxx
   Remember that you will have to log out and back in for this to take effect!  

執行sudo usermod -aG docker SENSETIME\xiaxuesong，然後顯示usermod: user 'SENSETIMExiaxuesong' does not exist
此時需要將用戶添加到用戶組

sudo groupadd docker  #提示groupadd: group 'docker' already exists
sudo gpasswd -a ${USER} docker #提示Adding user SENSETIME\xiaxuesong to group docker

重啓dockersudo service docker restart並切換到docker用戶組newgrp - docker

查看已有的鏡像docker images
查看docker版本docker --version