Update build.gradle

Author: jvmlet

grpc-spring-boot-starter-gradle-plugin/build.gradle

@@ -19,6 +19,10 @@ apply plugin: 'signing'
 apply plugin: "de.marcphilipp.nexus-publish"
 apply from: "../publishSonatype.gradle"
 
+project['signing.keyId'] = System.getenv('GPG_ID')
+project['signing.password'] = System.getenv('GPG_PASSWORD')
+project['signing.secretKeyRingFile'] = '/home/travis/.gnupg/secring.gpg'
+
 project['gradle.publish.key'] = System.getenv('gradlePublishKey')
 project['gradle.publish.secret'] = System.getenv('gradlePublishSecret')