Ubuntu20.04上安装Docker

Step 1: 安装必要的一些系统工具

sudo apt-get update

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

Step 2: 安装GPG证书

curl -fsSL https://mirrors.aliyun.com/docker-ce/linux/ubuntu/gpg | sudo apt-key add -

Step 3: 写入软件源信息

sudo add-apt-repository "deb [arch=amd64] https://mirrors.aliyun.com/docker-ce/linux/ubuntu $(lsb_release -cs) stable"

Step 4: 更新并安装Docker-CE

sudo apt-get-y update

sudo apt-get-y install docker-ce

Step 5: 安装docker-compose

sudo apt install docker-compose