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This may be a very silly idea (or a duplicate task), but here's my use-case: occasionally I want to be able to see the effects of a particular Gerrit changeset on a public MediaWiki installation. This is particularly true of user interface changes, but can also be true of other changes. It'd be nice if there were a one-click button somewhere that I could press to spin up a MediaWiki instance based on a particular Gerrit changeset. For the purposes of this task, let's assume only MediaWiki core, no extensions or other complexities. Is this doable?