Docker- Creating new files, windows- ubuntu

Hi:

I'm using Docker and I don't get how you create new folders in the container.

I'm using Docker on Windows running the iris health community.

I want to create 2 folders on the instance and be adding files to it; I must be missing something as i can't see how this gets easily managed?

May retry just downloading the main community HS edition not through docker but could how to amend the error

"Too many Cores (16) for InterSystems IRIS Community License." for the main installation not through docker- docker has that workaround but not seen one for a non docker installation?