I learned by "Installing all three servers (Community Server, Document Server, Mail Server) integrated" http://helpcenter.onlyoffice.com/server/docker/document/install-integrated.aspx
step by step installed onlyoffice (Community Server, Document Server, Mail Server) integrated on my local server. and open "http://localhost/" in browser, it works,
but when i click edit "ONLYOFFICE Sample Document.docx",it displayed error message.