...
- Install CentOS 7, refer to https://phoenixnap.com/kb/how-to-install-centos-7
- Install IEC, refer to IEC Type1&2 Installation Guide for R2
- Install Tars, refer to https://github.com/TarsCloud/Tars/blob/master/Install.md
Install Virtual Classroom BackEnd
cd /root
yum install -y npm
...