docker容器中安装vim

Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package vim

  这时候需要敲：apt-get update，这个命令的作用是：同步 /etc/apt/sources.list 和 /etc/apt/sources.list.d 中列出的源的索引，这样才能获取到最新的软件包。

等更新完毕以后再敲命令：apt-get install vim命令即可。

配置国内镜像源

实际在使用过程中，运行 apt-get update，然后执行 apt-get install -y vim，下载地址由于是海外地址，下载速度异常慢而且可能中断更新流程，所以做下面配置：

　　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
　　#更新安装源
　　apt-get update