I'll try not to spoil too much, but I really don't think you should read this so I'm not going to worry about telling you things that are revealed early in the book.
This is a pretty lousy book. To summarize in one word why, let me tell you this: exposition.
This isn't so much a novel as an imagining of a future world with various interesting future technologies that we might someday achieve. It isn't a story. It doesn't have characters. It has people-shaped props that allow the author to tell you about ideas he finds interesting, be they electronics, sociology, morality, or politics.
What "characters" there are are zero or one-dimensional. The main character is a genius, strong, good looking, and the pinnacle of human achievement. I mean the last part literally; he is called that by one of the leaders of his colony very early in the story. He has no flaw that is revealed during the story, and additionally has unique powers of the mind that make him the best programmer in history and also the most talented biologist. He also has a wife (with whom he has zero chemistry, although that may be intentional), a best friend (also no chemistry, this character's sole purpose is to do things the main character cannot do for one reason or another), and a father (for wise-sounding advice). Other faces you might meet are his teacher who told him to question everything, a sort-of creepy colony manager, and various red shirts.
Besides characters, Containment's plot is also nonexistent for the first fifty percent of the book. The first part is dominated by a fairly boring description of a stereotypical colony on Venus. Daily life and daily technology are the subject of almost continuous exposition. Three of the first nine chapters are LITERALLY history lessons in Cantrell's imagined universe. He occasionally makes weak attempts to mask this exposition. For example, the entirety of the thirteenth chapter is a back and forth question and answer session between two characters about the functions of a certain part of a colony. But this is lazy stuff, and it's really not much better than the walls of expository text we're treated with in the rest of the book.
The end of the book has a suitable number of plot twists, many of them telegraphed fairly early in the story. As soon as the first one occurs, you can probably make a guess about how the story will end and be not far from the truth.
Considering this book's only merits are in its mildly interesting technical ideas, Cantrell makes a few unforgivable mistakes. For example, toward the end of the book he has one of his characters take a lethal dose of atmospheric radiation in about forty minutes of exposure. Supposedly, this radiation would have come from events at least twenty years prior to the book's setting (the character receiving said dose is not aware of any nuclear events and is about twenty years old). So the event is still producing Chernobyl-control-room-during-meltdown-levels of atmospheric radiation twenty years after the fact? And someone survived these events? To pick one other example, the idea that humans have access to efficient fusion power and still need to use plants to make oxygen seems silly, although it is critical for the plot.
I'm not too upset about all this because I only paid a dollar for the book. However, if I knew what I do now, I would not have read it even of someone paid me. It's not worth the time. Do not buy this book. It is amateur on a level I've never encountered before in Amazon's recommendations for me.