ubuntu安装docker

sudo apt update

sudo apt install apt-transport-https ca-certificates curl software-properties-common

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 focal stable"

sudo apt update

apt-cache policy docker-ce

sudo apt install docker-ce

参考资料：https://kalacloud.com/blog/how-to-install-and-use-docker-on-ubuntu/#第-1-步-安装-docker