build.gradle

android {
    // ...
    signingConfigs {
        debug {
            keyAlias 'debug'
            keyPassword 'android'
            storeFile file('../debug.jks')
            storePassword 'android'
        }
    }
    
    buildTypes { 
        debug {
            signingConfig signingConfigs.debug
        }
        //...
    }
}