Upgrading an old phpBB client forum to Discourse?

Helo guys , im new with this things of docker and discourse and stuff, but I need to upgrade a old client forum in phpBB.
I want to install discourse in my domain how can i do that? Reply plz I need this fast

See here:

Granted, some of that stuff is fairly old, but the info is there. TL;DR:

  1. Install Discourse.
  2. Make phpBB’s mysql server available over the internet.
  3. Enter Discourse’s container, edit script/import_scripts/phpbb3.rb and fill in your database server settings.
  4. Run ruby phpbb3.rb.