NextCloud

NextCloud is a free and open source client-server cloud-service.

Server

A server can be setup via docker with the nextcloud image.

When using NextCloud with a specific nginx configuration you have to append
'overwriteprotocol' => 'https', to your config/config.html.

WebDAV

You can access ownCloud via WebDAV with the link
https://<nextcloud instance>/remote.php/dav/files/<user>/<path to folder or file>.