Cloud-Based Build Machine

Unity Cloud Build doesn't work for us because tvOS is a critical part of our platform setup, but we need some solution for automated builds because my team loses a lot of time to doing this.

What solutions has everyone seen lately that allow for a cloud-based automated build setup? I'm unsure what toolchains provide the lowest cost and highest configurability (running custom scripts, etc.), but I need something that can build from multiple branches and do both automated building and manually triggered builds.

If there isn't a good solution I can always fallback on a local build machine running Jenkins, but I'd prefer something cloud-based so the builds go faster.