Images and Layers

Images and Layers Under the Hood

How Linux Isolates showed OverlayFS and the OCI image format from the kernel's side. This section looks at them from the builder's side: how Dockerfile instructions become layers, how Docker 514 names and stores them, which base image BookNest should use, and how to tag, save and move images, with a five-line demonstration image, l3-layers.

Subsections