Nextcloud is a set of client-server software for creating network hard drives. Its function is similar to Dropbox, but Nextcloud is free and open source software. Everyone can install and run it on a private server, providing PC and mobile access. 

version:ubuntu20
Private SkyDrive version  ：nextcloud23

Steps to use nextcloud:

For related passwords, refer to the Readme file in the root directory
Website root directory: /var/www/nextcloud
It can be accessed directly from http://public network IP.