Understanding workflow automation and CD for build and release
Before we start creating our pipeline, let’s look at building and releasing apps in general. Android uses Gradle as its build tool and a KeyStore file to verify ownership of an app. If you are not familiar with releasing Android apps, please read this guide first: https://bit.ly/prn-android-release.
On iOS, you have to use Xcode to build, sign, and release your app. If you are not familiar with this process, please read this guide first: https://bit.ly/prn-ios-release.
Fortunately, for both platforms (Android and iOS), the build and deployment processes can be executed via command-line tools. Gradle works as a command-line tool itself and Xcode provides the Xcode command-line tools. This means we can write scripts for the complete process, which we can then invoke with our workflow automation tools.
Unfortunately, these processes are quite complex, so we don’t want to write scripts by ourselves....