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Static site generated from the repo. Can be hosted locally or online. Github pages are usually leveraged for this usecase

If using Django there are tools like django-docs (https://django-docs.readthedocs.io/en/latest/) and the recently released django-sphinx-view (https://noumenal.es/django-sphinx-view/).

You can use the CI to publish you md files with tools like https://docusaurus.io/