Building should only be necessary if you are making changes to gRPC-Kotlin, or if you'd like to use or test a version of gRPC-Kotlin that hasn't been released yet.
Use the following gradle command to build gRPC-Kotlin:
$ ./gradlew build
Install the built artifacts into your local Maven repository so that you can use them in your projects:
$ ./gradlew publishToMavenLocal
Ensure that you configure your project build to use the local version of gRPC-Kotlin.