Example of declaring Android signing configs using Gradle Kotlin DSL

build.gradle.kts

android {
    signingConfigs {
        getByName("debug") {
            keyAlias = "debug"
            keyPassword = "my debug key password"
            storeFile = file("/home/miles/keystore.jks")
            storePassword = "my keystore password"
        }
        create("release") {
            keyAlias = "release"
            keyPassword = "my release key password"
            storeFile = file("/home/miles/keystore.jks")
            storePassword = "my keystore password"
        }
    }
    compileSdkVersion(28)
    defaultConfig {
        applicationId = "com.mileskrell.someneatapp"
        minSdkVersion(19)
        targetSdkVersion(28)
        versionCode = 1
        versionName = "1.0"
        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        getByName("release") {
            isMinifyEnabled = false
            proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
            signingConfig = signingConfigs.getByName("release")
            isDebuggable = false
        }
        getByName("debug") {
            signingConfig = signingConfigs.getByName("debug")
            isDebuggable = true
        }
    }
}