[culebron21]

There are many companies offering such small prefab houses. This one [1] offers a system of container-sized blocks that are assembled in the factory, carried by truck and joined together on site. (Initially the blocks were container-size, and carried whole. Current designs are > 3m wide.)

The biggest problem with container-based buildings is that the standard road size of 2600 mm is very narrow. Subtract 150 cm on each side for insulation and walls material, and you're left with 2300 (ISO container is 2350 mm wide inside.) (Standard bed is ~2100 mm long, so you can't put it laterally -- I tried, and discovered you can't walk normally in 20 cm isle.)

[1] https://dubldom.com/

[annoying1]

From a research perspective you choose specifically what you need. Multiple containers can be used to optimize space but in these houses you don't need much and the houses shown on iso-bella are cheaper. I think you can be making those units self sufficient by self sustaining (vertical) crop farming where your own feces are used as furtilizer for example. Solar panels and satalite internet can be used for remote locations. There are plenty of inovations to apply to container building even a refurbish plan for old units. Plenty of options when you think about all unit functions not only living but also scientific or medical units that can be easily moved.