Unveiling Docker’s Overlay2: How Images Are Stored and Managed

This article explains Docker's OverlayFS/Overlay2 storage driver, detailing its layered image architecture, union‑mount mechanics, read/write behavior, metadata organization, and the roles of image, layer, and init layers within the container filesystem.

DockerFilesystemLinux

0 likes · 14 min read

Unveiling Docker’s Overlay2: How Images Are Stored and Managed

NetEase Smart Enterprise Tech+

Jun 8, 2020 · Cloud Native

Master Docker Image Layers: Build, Optimize, and Understand Storage

This article walks through building a Docker image, explains the Union File System underlying Docker's layered storage, analyzes image and container file system structures, and presents practical Dockerfile optimization techniques to reduce image size and improve build efficiency.

ContainerFilesystemImage

0 likes · 11 min read

Master Docker Image Layers: Build, Optimize, and Understand Storage