Investigate PR previews for GitHub Pages with a central preview repository

[redeboer]

It seems to be possible to generate PR preview for GitLab pages by pushing the build files to a subdirectory in a central repository (e.g. ComPWA/docs-preview) with the cpina/github-action-push-to-another-repository action. See this workflow for an example.

For now, as a hack, we can deploy the pages on GitHub Pages for a fork (see e.g. this workflow, but those previews are only temporary.

[redeboer]

A simple solution was implemented and tested in ComPWA/polarimetry#382, but that's just one preview in total, so each PR overwrites the existing preview. Alternatively, we can have a look at https://github.com/marketplace/actions/deploy-pr-preview.