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@bentsherman @pditommaso this PR is now good to merge.

docs.seqera.io/nextflow is currently on a Netlify property that @christopher-hakkaart pushes manually, so nothing will happen immediately on merge. Once we have checked that the new production build at https://nextflow-docs.netlify.app/ looks good (404 until this PR is merged) then we will update the redirect and the docs will go back to being automatically updated again.

Deployment previews for docs changes on PRs will be valid and updated again, and we should pay attention to any docs build failures that get reported (if PRs are merged with docs CI failures then there's a good chance that it could stop new builds for all projects on docs.seqera.io).

We've done pretty extensive testing on this PR now and are happy that it's stable and good to merge.

Hopefully in the near-ish future we will have a fairly major docs rearchitecture project go through, at which point we can return and delete the .docusaurus_site folder. We've kept it isolated for this reason so that the content in the markdown files should be fairly untouched when that happens.