默认在 root 用户下安装、使用，如果是其他用户，需要在命令前加上 sudo。
apt update
apt install apt-transport-https ca-certificates curl gnupg-agent software-properties-common
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add -
add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
apt update
apt install docker-ce docker-ce-cli containerd.io
systemctl enabel --now docker
docker container run hello-world