Understanding Docker Images: Structure, Management, and Internals
Core Concepts of Docker Images
What Is a Docker Image?
A Docker image is: - Immutable: Once built, its layers cannot be altered — any modification results in a new image.
Layered: Composed of stacked read-only filesystem layers; identical layers across images are shared on disk (typically under /var/lib/docker/overlay2/), reducing storage over ...
Posted on Wed, 04 Nov 2026 16:30:43 +0000 by stephenalistoun