Note: This feature is currently in private preview.
About prebuilding a Codespace
Prebuilding your codespaces allows you to be more productive and access your codespace faster. This is because any source code, editor extensions, project dependencies, commands, or configurations have already been downloaded, installed, and applied before you begin your coding session. Once you push changes to your repository, Codespaces automatically handles configuring the builds.
The ability to prebuild Codespaces is currently in private preview. To get access to this feature, contact [email protected].