Ubuntu18.04

安装

sudo apt-get install docker

给非root用户添加Docker执行权限

如果用户没有docker执行权限，终端会输出

Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get http://%2Fvar%2Frun%2Fdocker.sock/v1.24/containers/json?all=1: dial unix /var/run/docker.sock: connect: permission denied

设置权限

# 给$USER添加权限  
#  sudo usermod -aG docker $USER  

或者

sudo gpasswd -a $USER docker

#更新docker组
newgrp docker

验证docker是否成功安装

docker container run hello-world

如果成功，会显示