Replacing RV fridge with Residential Fridge

[JCat]

My RV fridge has been dead for a week now.
The cooling unit is bad.

I was going to get a Dometic replacement, but the price is $3000 at camping world.

Today I was at Home depot and they had a nice 10 cu ft stainless fridge for $400 on sale, which will fit my current opening in my RV.

So basically I can buy 7 residential fridges for the price of 1 RV fridge, complete nonsense.

Anyway I have a couple of questions about the residential fridge.
1. How does it get secured to the RV during installation ?
2. How can I lock the doors when I travel down the road ?
3. How do I secure the items in the fridge from flying off the their shelves when traveling ? (tension bars)

Thanks for the help.

[Alfred622]

Can you repair rather than replace? This is a video showing how to replace a faulty heating element if that happens to be your trouble.... Youtube Link

[2oldman]

How can I run it when I don't have shore power?