We created a set of these, you can see them at:
https://integration.wikimedia.org/ci/view/BrowserTests/view/MultimediaViewer...
In the near future I would like to refine exactly what is required for these builds as regards
* browser * version * OS (if applicable) * target environment (beta, test2, mw.o)
as well as whatever additional feature coverage we might provide.
Thanks, -Chris