I did one like pictured below.
I had Weatherport.com build the canvas and frame work complete with full length doors.
I used it for a remote shop while doing jobs in Alaska.
It worked out well but I wouldn't suggest it, Weatherport makes a great product but ridiculously expensive.
All my construction materials were shipped to Alaska in the containers so I had them pretty much for free. A couple guys could put the shop together in half a day.
[Linked Image from i.ebayimg.com]https://weatherport.com/products/vehicle-equipment-storage/workshops/

This would be a smarter idea.
[Linked Image from i.pinimg.com]