I planted garlic in both containers and in the ground and the container grown ones were not at all any good. Don't bother. My friend at work also grew her garlic in container and her's didn't grow well either.
If you can, grow them in the ground.
I was a bit late in getting my garlic and I've only just planted them. Whether the full moon has anything to do with good garlic I don't know, but you sure won't get any vampires visiting your veggie patch when they are growing!!!!