Yes, lilies are very attractive in containers and do very well if properly managed. Large pots are best, particularly whiskey barrels, especially if bulbs are to be wintered over year-to-year in containers. Care must be taken not to subject potted lilies to great extremes of temperature or soil moisture; which can limit their performance. The best pot varieties tend to be the more compact varieties, which do not grow disproportionately tall for their container.