Using a shipping container is almost always a stupid plan compared to just putting up some wood. As much as I want to make zoning more flexible, I'm not in a rush to change that particular regulation.
Sounds arrogant to block someone else plan to have a home, just because you don't like it. And then claim regulations are not the problem, but lack of willing to invest.
If you think containers are a bad idea, don't buy one.
The demand for containers is rare and they don't really save money over building small out of reasonable materials. That specific regulation isn't blocking anyone from having a home.