Onlyoffice nginx with my certificate

Hi, is there a document which explain how can I install onlyoffice with nginx, certificate but without lets encrypt and without docker?
OS: ubuntu server 20.04
Thanks

Hello,
Please take a look at these guides:
https://helpcenter.onlyoffice.com/installation/docs-community-install-ubuntu.aspx
https://helpcenter.onlyoffice.com/installation/docs-community-https-linux.aspx