CentOS7

1. 切换源

# 设置为阿里云的源
sudo yum install -y yum-utils
sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

2. 安装docker

sudo yum install docker-ce

Ubuntu

1. 安装依赖

apt update
apt install apt-transport-https ca-certificates curl gnupg-agent software-properties-common

2. 使用下面的 curl 导入源仓库的 GPG key

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

3. 将 Docker APT 软件源添加到你的系统

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

4. 安装 Docker

apt updata
apt install docker-ce

显示版本

docker version

设置开机启动

systemctl enable docker

启动docker

systemctl start docker