添加动物欢迎语

平时，我们登录系统的时候都没怎么注意，就像生活得要有乐趣，下面介绍一种一登陆就有动物欢迎语。如图：

主要是用到两个包，一个是fortune、一个是cowsay

1、安装cowsay

1）安装npm

yum -y install npm

2）安装cowsay

npm install -g cowsay

2、安装forturn

百度云下载地址：https://pan.baidu.com/s/1nS9ov3Gf2d9PJrSG8aIG6w

recode官网下载地址： https://centos.pkgs.org/7/centos-x86_64/recode-3.6-38.el7.x86_64.rpm.html

fortune官网下载地址：http://springdale.math.ias.edu/data/puias/7/x86_64/os/Addons/Packages/fortune-mod-1.99.1-17.sdl7.x86_64.rpm

安装：

rpm -i recode-3.6-38.el7.x86_64.rpm
rpm -i fortune-mod-1.99.1-17.sdl7.x86_64.rpm

3、在/etc/profile.d目录下，添加脚本 cow.sh

#!/bin/bash

fortune |cowsay

4、重新登录

5、Dockerfile

FROM docker.io/centos
RUN yum -y install wget
RUN wget https://nodejs.org/dist/v8.12.0/node-v8.12.0-linux-x64.tar.xz
RUN xz -d node-v8.12.0-linux-x64.tar.xz
RUN tar -xf node-v8.12.0-linux-x64.tar
RUN ln -s /node-v8.12.0-linux-x64/bin/node /usr/local/bin/node
RUN ln -s /node-v8.12.0-linux-x64/bin/npm /usr/local/bin/npm 
RUN npm install -g cowsay
RUN ln -s  /node-v8.12.0-linux-x64/bin/cowsay /usr/local/bin/cowsay
RUN wget http://mirror.centos.org/centos/7/os/x86_64/Packages/recode-3.6-38.el7.x86_64.rpm
RUN rpm -i /recode-3.6-38.el7.x86_64.rpm
RUN wget http://springdale.math.ias.edu/data/puias/7/x86_64/os/Addons/Packages/fortune-mod-1.99.1-17.sdl7.x86_64.rpm
RUN rpm -i /fortune-mod-1.99.1-17.sdl7.x86_64.rpm