Execute our tests inside of a JDK8 container

Jenkinsfile

@@ -1,27 +1,20 @@
-node {
-    stage 'Clean workspace'
-    /* Running on a fresh Docker instance makes this redundant, but just in
-     * case the host isn't configured to give us a new Docker image for every
-     * build, make sure we clean things before we do anything
-     */
-    deleteDir()
+#!/usr/bin/env groovy
 
+node('docker') {
+    stage 'Cleanup workspace'
+    deleteDir()
 
     stage 'Checkout source'
     checkout scm
 
-
     stage 'Build and test'
-    /* if we can't install everything we need for Ruby in less than 15 minutes
-     * we might as well just give up
-     */
-    timeout(30) {
-        sh './gradlew -iS'
+    docker.image('java:8-jdk').inside {
+        timeout(30) {
+            sh './gradlew -iS'
+        }
     }
 
     stage 'Capture test results and artifacts'
-    step([$class: 'JUnitResultArchiver', testResults: 'build/test-results/**/*.xml'])
-    step([$class: 'ArtifactArchiver', artifacts: 'build/libs/*.jar,build/distributions/*.zip', fingerprint: true])
+    junit 'build/test-results/**/*.xml'
+    archiveArtifacts artifacts: 'build/libs/*.jar,build/distributions/*.zip', fingerprint: true
 }
-
-// vim: ft=groovy