Dive is a tool for analyzing Docker images; it helps explore each layer in the image and identify what's changed in each layer. Dive estimates image efficiency and wasted space in an image and can be integrated into the continuous integration (CI) pipeline to fail the build based on the efficiency score or amount of wasted space. We've used it in a few projects, and it has proven to be a useful tool — particularly if you're building images with a very low tolerance for additional tools or space consumption.