Ask HN: Product that lets you self host customer's Git repo

Assuming a customer has given you read access to their github repos. You now want to be able to deploy one of git repos, with all the goodness of uptime, self healing, exposing api's, logs, etc all in a sandboxed environment so that is safe.

Almost like white label hosting. Dokku would work if it wasn't so tightly coupled with git.

Nice to haves: - should support multiple languages/buildpacks - open source / self hosted

Has anyone solved this or know of a good tool for this use case?