Install OwnCloud di Ubuntu 20.04

Referensi

https://doc.owncloud.com/server/10.9/admin_manual/installation/quick_guides/ubuntu_20_04.html
https://doc.owncloud.com/server/10.9/admin_manual/installation/manual_installation/manual_installation_db.html
https://helpcenter.onlyoffice.com/installation/docs-community-install-ubuntu.aspx
https://github.com/ONLYOFFICE/document-server-proxy/blob/master/nginx/proxy-to-virtual-path.conf