docker容器中安裝vim

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

  這時候需要敲：apt-get update，這個命令的作用是：同步 /etc/apt/sources.list 和 /etc/apt/sources.list.d 中列出的源的索引，這樣才能獲取到最新的軟件包。

等更新完畢以后再敲命令：apt-get install vim命令即可。

配置國內鏡像源

實際在使用過程中，運行 apt-get update，然后執行 apt-get install -y vim，下載地址由於是海外地址，下載速度異常慢而且可能中斷更新流程，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
　　#更新安裝源
　　apt-get update