I don't suppose many of you see the Yorkshire Post newspaper which is emblazoned with the banner headline 'Yorkshire's National Newspaper' erm!
Anyway this conversion is neatly handled, in my view, even with expensive steel doors
https://www.yorkshirepost.co.uk/lifestyle/homes-gardens/for-sale-shipping-container-that-s-now-a-stylish-office-garden-room-1-8992743