Has anyone ever tried making a GitHub Actions workflow that will build and deploy a PR to some temporary domain? I think that this would be very nice to quickly review PRs to the website, but I understand that we are limited by the "choose one branch" policy of GitHub pages.

We could always deploy to some different subdomain (e.g., preview.precice.org) via some other cloud provider, of course, but I don't know if there is enough interest for this feature to justify for it. We could also archive older versions there, if we ever wanted (e.g., to archive.precice.org).