build.gradle

apply plugin: 'java'
apply plugin: 'application'
mainClassName ='com.google.firebase.samples.config.Configure'

sourceCompatibility =1.8

repositories {
 mavenCentral()
}

# run.doFirst { environment 'GOOGLE_APPLICATION_CREDENTIALS', '[YOUR_SERVICE_ACCOUNT_JSON_DIR]' }

run {
if (project.hasProperty("action")) {
 args = args <<"${action}"
 }
if (project.hasProperty("etag")) {
 args = args <<"${etag}"
 }
if (project.hasProperty("version") &&!project.version.equals("unspecified")) {
 args = args <<"${version}"
 }
 standardInput =System.in
}

dependencies {
 testCompile group: 'junit', name: 'junit', version: '4.12'
 compile 'com.google.auth:google-auth-library-oauth2-http:0.26.0'
 compile 'com.google.code.gson:gson:2.8.7'
 implementation 'com.google.firebase:firebase-admin:9.1.1'
}