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Build Your Own Docker

Build a container runtime from scratch using Linux namespaces, cgroups, and overlayfs. You'll implement PID/mount/network namespace isolation, memory and CPU resource limits, layered image storage with copy-on-write, and the full container lifecycle. By the end you'll deeply understand what Docker, Podman, runc, and containerd actually do.

advanced19 lessons4 chapters19 graded exercisesPython

No sign-up needed for lesson 1 · certificate on completion · sign up to save progress

What you’ll have built

Chapter by chapter. Every step is a graded exercise.

  • Linux Namespaces
  • cgroups & Resource Limits
  • Filesystems & Images
  • Container Lifecycle
Starts in Python — solve in the language you choose in the editor, same tests either way.

Curriculum

4 chapters, 19 lessons. Each lesson is a short read, one graded exercise, and a quiz.

  1. 1PID NamespaceRead · exercise · quiz
  2. 2Mount NamespaceRead · exercise · quiz
  3. 3Network NamespaceRead · exercise · quiz
  4. 4User NamespaceRead · exercise · quiz
  5. 5UTS NamespaceRead · exercise · quiz
  6. 6IPC NamespaceRead · exercise · quiz
  7. 7veth + Bridge + NATRead · exercise · quiz
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Build Your Own Docker