signing config

build.gradle

android {
    compileSdkVersion 28
    buildToolsVersion '27.0.3'
    signingConfigs {
        release {
            keyAlias 'key2'
            keyPassword 'password'
            storeFile file('/home/bullhead/keys/key.jks')
            storePassword 'password'
        }
        debug {
            keyAlias 'key2' // key alias name e.g key0
            keyPassword 'password'
            storeFile file('/home/bullhead/keys/key.jks')
            storePassword 'password'
        }