"The Complete Shade Gardener", by George Schenk may be the way to go. It is not limited to container gardening and may even touch on it only lightly, but there is nothing that can grow in the ground that can't be adapted to containers as well, at least on a temporary basis. And this is an excellent book on gardening in a shady location.

Or you may want to look at books that focus on foliage like "The Foliage Garden", by Becke Davis. There is a huge number of great plants suited for shade that offer primary attraction through the colors, shape and texture of their foliage. There is a lot more to shade gardening than just impatiens or even just flowering perennials and annuals :-)