CI:

Continuous Integration--automatically testing after every commit

Continuous Integration (CI) is an industry standard practice for professional software development.

Some commonly used CI systems include:

GitHub Actions

GitHub actions are controlled via a hidden directory called .github/workflows in the root of a GitHub repository.

Documentation:

Examples:

You can use Travis-CI for free on pretty much any open source github.com repo that has a .travis.yml file in it.

You log into http://travis-ci.org with your github.com username/password in order to set it up.