While updating https://www.mediawiki.org/wiki/Hackathons/Laptop_setup#Goal_%238%3A_Fetch_Mediawiki_codebase_and_setup_the_development_environment to add a reference to the Docker environment, it felt a bit awkward that our documentation is spread out in three locations: mw:Docker, mw:Docker/Recipes, and DEVELOPERS.md. I'd like to propose the following:
- mw:Docker can stay as a general page that links to all the things
- create mw:MediaWiki-Docker which is the landing page for the development environment. The intro basically points to DEVELOPERS.md.
- Move the contents of mw:Docker/Recipes onto the new mw:MediaWiki-Docker page, so all the content is in one place.
- update DEVELOPERS.md to reference mw:MediaWiki-Docker (instead of how it currently points to mw:Docker and mw:Docker/Recipes)