Corn should grow just fine in a container - but you might want to go for something a little bigger. Have you heard of the 3 sisters method for growing corn/beans/squash? Several corn plants are grown close together with the beans climbing them and the squash providing weed control. Anyway, folks have been doing it for hundreds of years. I would suggest using those plastic 'totes' - they're nice and deep and would give room for maybe 4 or 5 plants... you could even plant them in row!
I DO hope you're going to post pictures of the canon. And - what's with the woods???
I did three sisters last year and I must have done something wrong. I think it was my corn spacing - you can't space them too close. What occurred is that the bean vines would "hop" from stalk to stalk. In doing so, they would pull one stalk towards the other. Next thing I knew, I had corn all twisted and bending over due to the bean vines pulling on them. It was also difficult to harvest the beans or corn without stepping on the squash. A great idea in theory but you can't have the corn plants or the rows too close together for it to be successful.
Might work better in containers but the way that squash runs you'd have to have huge containers and plenty of room between them.