What are the rules for growing sweet peppers in a container?

[SmittenGarden]

I'm new to gardening and growing veggies. I have two city pickers self watering containers with zucchini and tomatoes so far and I'd like to try a third container of sweet peppers. But after having troubles with one of my Tommy's its become apparent there rules to container tomato growing I wasn't aware of.

So before I go out, spend more money and plant more plants.
What should and shouldn't I do? Would another city pickers planter be ok? I'd like something on casters like that and self watering. Which is why I'm temped to buy another. Is there certain types of bell peppers I'm suposed to know about? Like the tomatoes being determinate or indeterminate (which I don't know about, or that its better to not plant them in their biodegradable pots).

Thanks in advance