OnlyOffice requires your SSH key or password to install

If you so choose to do this. You could of course go to their '.org' for the open source version which leads you here:

https://github.com/ONLYOFFICE/Docker-CommunityServer#install...

To clarify, this is directly linked from the front page of their '.org'.

Edit: clarification

It's a good thing we banished that curl | bash antipattern.