ubuntu20安装docker并设置用户权限

 sudo apt-get remove docker docker-engine docker.io containerd runc
sudo apt-get install ca-certificates curl gnupg lsb-release
curl -fsSL http://mirrors.aliyun.com/docker-ce/linux/ubuntu/gpg | sudo apt-key add -
sudo add-apt-repository "deb [arch=amd64] http://mirrors.aliyun.com/docker-ce/linux/ubuntu $(lsb_release -cs) stable"
sudo apt install docker-ce docker-ce-cli containerd.io
sudo systemctl status docker
sudo usermod -aG docker $USER

重启电脑后，就能够用普通用户执行docker命令。