linux systems Ali cloud provides a free graphical interface, if you need to install a graphical interface,
Please refer to the installation graphical desktop environment for Linux CentOS instances and automatically installed in the system and run the VNC Server installation to deploy it.
Install a graphical desktop environment for Linux instance:
https://help.aliyun.com/knowledge_detail/41227.html?spm=5176.11065259.1996646101.searchclickresult.164a7056IX1H96
Automatically install and run the VNC Server in CentOS systems:
https://help.aliyun.com/knowledge_detail/41181.html?spm=5176.11065259.1996646101.searchclickresult.7fc36dcd4bQ2Mu