Importing bbPress into Discourse

Okay, sorry for the n00b question above.

I’ve seen this thread:

…and now I’m wondering how to go about running the BBPress script.

The instructions say:

"After reviewing and modifying, to run the bbPress import script you will do:

cd path/to/your/discourse_folder
ruby script/import_scripts/bbpress.rb"

In my case this will be from inside the Docker container. If I can get it to run, am I correct in thinking that the database lives outside the container and that any content I manage to import will persist if I destry and rebuild the container?

Also, can I run mailcatcher from inside the container? I would like to avoid spamming my users as I tinker with the import process.

Any hints or tips gratefully received! Anybody looking for some paid consulting work?