VS Code and GitHUB Codespaces use devcontainers to create reproducible, shareable software environments. Sometimes though, I want to run the environment on my own machine, and not using VS Code. In this video, I will show you an example of a devcontainer in a GitHUB repo and how it works in a Codespace. Then I will show you a new project (https://github.com/jkitchin/devcontainer) that lets me run the devcontainer locally.