Ask HN: Static site hosting with Google Auth

There are various documentation sites we want to host as a company (e.g. Storybook with our react component library). We don't want these to be publically available, which rules out GH Pages, Surge.sh, etc..

Google Sites is great because it allows us to have Google Auth (we run on Google Apps), but we can't upload a static site to it.

What's the best way to host a static site protected by google auth for a given domain?