The talk about containers as housing made me think about how at least here in Sweden we use modular baracks that can quickly be assembled at job sites, they contain everything from offices, to showers, to kitchens, to toilets, to personal rooms and more.

These have wooden walls, are insulated, can easily be put up with interior doors between the modules, you can stack them, some even have interior staircases.

These are insanely common here, if you need to cheaply house people, using these modular units seems far better than using containers.

I am sure there would be a market for redeveloping units into apartments.