Container Layer
Noun · Development
Definitions
A filesystem layer in a container image created by a build step, stacked together with other layers to form the final image. Layer design affects build caching, image size, transfer efficiency, and how much duplicate data ends up being shipped across environments.
In plain English: One filesystem layer that makes up part of a container image.
Example: "Splitting dependencies into their own container layer meant app-code changes no longer invalidated the expensive package install cache."