360 Zhihui Cloud Developer
Jan 10, 2025 · Cloud Native
Unveiling Docker Image Internals: Layers, Storage, and Registry Mechanics
This article explains how Docker images are built on UnionFS with overlay2, describes the rootfs and layer design, details how containers mount image layers, outlines the directory layout of a Docker registry, and walks through the complete image upload, mounting, and security processes.
Container ImagesDockerImage Registry
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