Reviewed-on: https://gitea.shuishan.net.cn/10205501411/cloud-computing-course/pulls/3

CentOS中，vim command not found

原本的export JAVA_HOME=/usr/java/jdk1.8.0_391 这行写成了jdk-1.8.0_391，导致java command not found

Reviewed-on: https://gitea.shuishan.net.cn/10205501411/cloud-computing-course/pulls/2

不然读着像机翻...

Reviewed-on: https://gitea.shuishan.net.cn/xslu_dase_ecnu_edu_cn/cloud-computing-course/pulls/6

Reviewed-on: https://gitea.shuishan.net.cn/xslu_dase_ecnu_edu_cn/cloud-computing-course/pulls/5

Reviewed-on: https://gitea.shuishan.net.cn/xslu_dase_ecnu_edu_cn/cloud-computing-course/pulls/4

Reviewed-on: https://gitea.shuishan.net.cn/xslu_dase_ecnu_edu_cn/cloud-computing-course/pulls/3