Set credentials to write build cache

Co-authored-by: René Pfeuffer<rene.pfeuffer@cloudogu.com>

Jenkinsfile

@@ -55,8 +55,12 @@ pipeline {
 
     stage('Build') {
       steps {
-        // build without tests
-        gradle "-xtest build"
+        withCredentials([
+          usernamePassword(credentialsId: 'scmm-gradle-build-cache', usernameVariable: 'GRADLE_BUILD_CACHE_USER', passwordVariable: 'GRADLE_BUILD_CACHE_PASSWORD')
+        ]) {
+          // build without tests
+          gradle "-xtest build"
+        }
       }
     }
 

settings.gradle

@@ -90,5 +90,9 @@ buildCache {
     useExpectContinue = true
     url = 'https://build-cache.scm-manager.org/cache/'
     push = true
+    credentials {
+      username = System.getenv('GRADLE_BUILD_CACHE_USER')
+      password = System.getenv('GRADLE_BUILD_CACHE_PASSWORD')
+    }
   }
 }