Uploaded January 2026 | Updated September 2026, 2 weeks ago

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In this video CJ shows why dev containers are so great and how to get started with them.

00:00 - demo
03:04 - what are containers?
04:48 - the dev containers spec
05:13 - dev container templates
06:20 - dev container setup
07:38 - dev container features / common utilities
09:15 - docker in docker feature
10:41 - more useful features
11:41 - what makes up a feature
12:19 - claude code example dev container
13:48 - my firewall feature
14:42 - feature based claude code dev container
15:30 - claude code inside a dev container
16:34 - editor customizations
19:15 - thanks

Example base dev container setup | gist.github.com/w3cj/0b6d2c619e59768f592e1c7e8ec4cb93
What is a Container? | docker.com/resources/what-container
Get Docker | docs.docker.com/get-started/get-docker
Docker Crash Course for Developers | youtube.com/watch?v=RHjXPN_h1YA
Dev Containers Spec | https://containers.dev
Claude Code Example Dev Container Setup | github.com/anthropics/claude-code/tree/main/.devcontainer
Claude Code Feature | github.com/stu-bell/devcontainer-features/tree/main/src/claude-code
Firewall Features github.com/w3cj/devcontainer-features/tree/main
VS Code Dev Container Settings | code.visualstudio.com/docs/devcontainers/containers#_personalizing-with-dotfile-repositories

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