1. 卸载旧版

sudo apt-get remove docker docker-engine docker.io containerd runc

2. 安装依赖

sudo apt-get install \
    apt-transport-https \
    ca-certificates \
    curl \
    gnupg-agent \
    software-properties-common

3. 获取GPG key

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

4. 添加apt私有源

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

5. 安装Docker

sudo apt-get update
# 查看可安装版本
apt-cache madison docker-ce
sudo apt-get install docker-ce containerd.io
# 安装指定版本：docker-ce=<VERSION_STRING>
sudo apt-get install docker-ce=18.06.2~ce~3-0~debian

6. 测试

sudo docker -v
sudo docker run --rm hello-world

7. 移除

sudo apt-get autoremove --purge docker-ce
sudo apt-get autoremove --purge containerd.io