docker安装

1、基本环境

   台式机安装virtualBox5.2，安装ubuntu16.04

2、参考docker学习（一）ubuntu上安装docker https://www.cnblogs.com/walker-lin/p/11214127.html

     docker --version 20.10

    12) 安装 docker-compose

       sudo curl -L https://github.com/docker/compose/releases/download/1.25.4/docker-compose-`uname -s`-`uname -m` -o /usr/local/bin/docker-compose

     此命令有问题，后采用

sudo curl -L "https://github.com/docker/compose/releases/download/1.25.0/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
安装成功。但运行docker-compose 报权限不足。

sudo chmod +x /usr/local/bin/docker-compose

sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose