Gradle

We must also have Gradle installed on our system. Gradle is a modern build tool that got popularity with Android. It uses Groovy-based DSL instead of XML files and mixes declarative and imperative type of build configuration. With Gradle you can define dependencies and project properties, and also you can write functions. We will leverage Gradle to build our deployment system, so with only one command we will be able to deploy all our software to cloud.

Throughout the book, we will use the Gradle wrapper that locks the Gradle version for the project, thus providing integrity between different teams. However, in order to run the gradle wrapper task, which will create the gradle wrapper files in our project, we have to have at least one Gradle version locally in our system.

If you do not have it already, execute the following:

    $ curl -s https://get.sdkman.io | bash  

Then, open a new terminal and type this:

    $ sdk install gradle 2.14  

This will install the Gradle 2.14 version.