# 更新
sudo apt update
# 安装必要的组件
sudo apt install apt-transport-https ca-certificates curl software-properties-common
# 把apt-key加入系统
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
# 把docker源加入系统
sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
# 再次更新系统
sudo apt update
# 安装docker-ce
sudo apt install docker-ce
# 查看docker服务状态、启用docker服务、启动docker服务
sudo systemctl status docker
sudo systemctl enable docker
sudo systemctl start docker
# 把当前用户加入docker组
sudo usermod -aG docker ${USER}
# 切换到当前用户,检测docker权限是否生效
su - ${USER}
id -nG
exit
# 下载docker-compose代码
sudo curl -L "https://github.com/docker/compose/releases/download/1.27.4/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
# 给docker-compose授与执行权限
sudo chmod +x /usr/local/bin/docker-compose
# 查看docker-compose版本
docker-compose --version
===========
也可以通过脚本一键安装docker,但有国内有些地方很难下载安装脚本
curl -fsSL get.docker.com -o get-docker.sh
sudo sh get-docker.sh --mirror Aliyun
# sudo sh get-docker.sh --mirror AzureChinaCloud