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** linux系统没有vim工具太不方便了，我要在docker容器里修改一些文件，所以决定安装下vim。系统是debian。 首先进入容器（前提是容器已经启动）：
docker exec -it mysql bash # mysql是容器名称，换成你自己的接下来更新下apt-get的源。把下面的命令全部复制粘到容器的控制台执行：
mv /etc/apt/sources.list /etc/apt/sources.list.bak && \ echo "deb http://mirrors.163.com/debian/ jessie main non-free contrib" >/etc/apt/sources.list && \ echo "deb http://mirrors.163.com/debian/ jessie-proposed-updates main non-free contrib" >>/etc/apt/sources.list && \ echo "deb-src http://mirrors.163.com/debian/ jessie main non-free contrib" >>/etc/apt/sources.list && \ echo "deb-src http://mirrors.163.com/debian/ jessie-proposed-updates main non-free contrib" >>/etc/apt/sources.list现在就能安装软件了：
apt-get update && apt-get install vim -y