I read that eggplant is suitable for growing in large tubs or containers as it is a bush, rather than a sprawling vine. The article suggested to grow it in loamy soil without too much fertilizer. It even said that container growing would reduce soil borne diseases.
So...good luck! I want to grow a variety of Japanese eggplant this year because I like this one mustard pickle recipe. But you inspired me to plant regular eggplant because I do love to eat Italian caponata and eggplant parmesan...roasted eggplant dip...hmmm. I don't know if I can wait until they grow!