I hope you don't need to do anything special. I added the aquarium controller to a frig I just got ($40 craigslist). I also replaced the drawers with a piece of plywood, reinforced with 2x4 sections. Easy "build", if you would even call it that. The plywood is strong enough that I can sit on it.
The can is only for testing it the controller. I'll be putting a bucket of water in there tomorrow and insulating the probe. Then, I'll check the temp with a known accurate thermometer to calibrate the controller: