How GitHub builds GitHub using VS Code and Codespaces!
GitHub: How does GitHub develop… GitHub? Using Codespaces. Find out how we moved our development environment from local macOS builds to cloud hosted, Linux based, GitHub Codespaces
https://github.blog/2021-08-11-githubs-engineering-team-moved-codespaces/

https://twitter.com/code/status/1426248945672593409