I didn't add this yet because it wasn't there and I just would add it in a later PR.
And I wasn't able to get this running because I need a container with android emulator which I couldn't find (even some avd containers didn't work, take a look at my markwon plugin as example)
That means that we (the maintainers) have to approve every build before it starts. That's useful to prevent running it on e.g. just changing the readme or such files which does not need it. Also, we can control that it doesn't run on wip PRs.