Semaphore lets you test and deploy code at the push of a button with hosted continuous integration and delivery.

After you push code to GitHub, it quickly runs your tests on a platform with first-class Docker support and 100+ tools preinstalled. Semaphore lets you parallelize your builds, get feedback right inside pull requests, and deploy more often in a unified workflow. Already trusted by thousands of businesses around the globe, it can help your team move faster too.

Level up your skills with GitHub Learning Lab. Our friendly bot will take you through a series of fun, practical projects to learn the skills you need in no time—and share helpful feedback along the way.