The primary function of the build stage of the continuous deployment pipeline is to build artifacts and a container image and push it to a registry from which it can be deployed and tested. Of course, we cannot build anything without code, so we'll have to check out the repository as well.
Since building things without running static analysis, unit tests, and other types of validation against static code should be illegal and punishable by public shame, we'll include those steps as well.
We won't deal with building artifacts, nor we are going to run static testing and analysis from inside the pipeline. Instead, we'll continue relying on Docker's multistage builds for all those things, just as we did in the previous chapters.
Finally, we couldn't push to a registry without authentication, so we'll have to log in to Docker...
