Ubuntu安装docker
1.安装最新版本docker（1）执行：wget -qO- https://get.docker.com/ | sh
（2）然后查看docker版本：docker version
https://s1.运维网.com/images/blog/201901/28/79abd4a41b3e7d4ede2b1683ebbef5a7.png
（3）docker安装成功
2.安装docker-compose
（1）执行：curl -L "https://github.com/docker/compose/releases/download/1.23.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
（2）添加可执行权限：chmod +x /usr/local/bin/docker-compose
（3）将命令链接到系统命令的目录：ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose
（4）docker-compose安装成功
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