We have gone over many aspects of Travis CI in this chapter, including the differences between Travis CI and Jenkins. We went over some prerequisite actions in order to get Travis CI set up and learned to add an SSH key to your GitHub account. We then explained the Travis CI build job and went over the YAML syntax in detail. We then explored many real-world examples of Travis YML scripts and explained the build life cycle in Travis CI and went over different aspects such as initiating services such as Docker and their uses in Travis CI.
In the next chapter, we will go over all of the Travis CLI commands, explain how to get Travis CLI installed on Linux, macOS, and Windows, and go over automating tasks like encrypting credentials using the Travis CLI commands.