Functionally yes, but it’s likely more specifically referring to having one in a temporary structure, e.g.: a demountables.

“Donga” is used commonly within Australian mining and construction industries (and presumably also overseas) to refer to a demountable/transportable structure like you might see on a commercial construction site. Sometimes in FIFO mine sites they’re used to house the workers. I’m guessing the same things are used in Antarctic research stations to house the personnel.

These things: https://dostonhouse.com/office-donga/

"sleeping chamber" struck me as unusual too. If you search wikipedia for it, this Antarctic English article is the first relevant result.

I think "bedchamber" is probably what was meant. https://en.wiktionary.org/wiki/bedchamber

Sounds more like a cryostasis pod.