Ubuntu 20.04 安装 Docker

uname -r

# 新增更新源
sudo echo "deb https://download.docker.com/linux/ubuntu zesty edge" > /etc/apt/sources.list

# 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

{ 
   "registry-mirrors":["https://reg-mirror.qiniu.com/"]}

$ sudo systemctl daemon-reload
$ sudo systemctl restart docker