This is a good idea. Are there any down sides to using it? I feel like a proper implementation of this could reduce a lot of noise in the development experience. Some part of me wonders if you can brick your box with it or if there are less than obvious performance costs?
Not an expert, but one risk when using this on an immutable OS is that your start to treat the containers like pets, ie that you're going to want to upgrade then to newer versions and have to do all the maintenance chores an immutable OS is supposed to do away with.
