How to deploy multiple versions of the documentation on different branches in one time?

Hi,

I would like to deploy multiple versions of the documentation using GitHub Actions and GitHub Pages. Ideally, I want to manage this in one project with one instance, but have different branches represent different versions of the docs.

## Questions:

Is it possible to build documentation from multiple branches at once and publish them together as a multi-version documentation site?

## Expected setup

Branches in the repository: (one instance)

main → latest development version

release/1.0 → stable v1.0

release/2.0 → stable v2.0

Documentation site structure on GitHub Pages:

/latest/ → built from main

/v1.0/ → built from release/1.0

/v2.0/ → built from release/2.0

## other ways

If I use group builds, then I need to have multiple instances within a single branch at the same time, and group builds also don’t support building one instance across multiple branches with different versions，I don't want to use this method.

Thanks