Containers are pretty amazing. They allow simple processes to act like virtual machines. Underneath this elegance is a set of patterns and practices that ultimately makes everything work. At the root of the design is layers. Layers are the fundamental way of storing and distributing the contents of a containerized file system. The design is both surprisingly simple and at the same time very powerful. In today’s post, I’ll explain what layers are and how they work conceptually.Building layered im...