luceos
Thank u Luceos, I' am not sure if a shared hosting using Apache or Nginx as the web server can install our Flarum, if it can, I will prefer to install it under a shared hosting environment, you know config a SSL certificate under shared hosting is very easy.
On the other hand, if there is any document about installing of Flarum on a Ubuntu or Debian dedicate server, I will glad to have a try.