Your local pipeline – Git hooks

After we successfully set up a simple but already very useful CI/CD pipeline, we now want to look at running some steps already in the local development environment, even before committing them to the repository. This may sound like double work right now—why should we run the same tools twice?

Remember Figure 11.1–Estimated relative costs of fixing a bug based on the time of its detection, from the beginning of the chapter: the earlier we catch a bug, the fewer costs or the less effort it will cause. Of course, if we find a bug during the CI/CD pipeline, that is still much earlier than in the production environment.

The pipeline does not come for free, though. Our example application build was fast and just took roughly a minute. Imagine, however, a full-fledged Docker setup that already takes a considerable amount of time to create all the necessary containers. And now, it fails to build just because of a little bug that you...