Test against Java 20 on CI.

See #2507.

Author: gregturn

Jenkinsfile

@@ -1,7 +1,7 @@
 def p = [:]
 node {
-    checkout scm
-    p = readProperties interpolate: true, file: 'ci/pipeline.properties'
+		checkout scm
+		p = readProperties interpolate: true, file: 'ci/pipeline.properties'
 }
 
 pipeline {
@@ -18,7 +18,7 @@ pipeline {
 	}
 
 	stages {
-		stage("test: baseline (Java 17)") {
+		stage("test: baseline (main)") {
 			when {
 				beforeAgent(true)
 				anyOf {
@@ -32,17 +32,42 @@ pipeline {
 			options { timeout(time: 30, unit: 'MINUTES') }
 
 			environment {
-				DOCKER_HUB = credentials("${p['docker.credentials']}")
 				ARTIFACTORY = credentials("${p['artifactory.credentials']}")
 			}
 
 			steps {
 				script {
-					docker.withRegistry(p['docker.registry'], p['docker.credentials']) {
-						docker.image(p['docker.java.main.image']).inside(p['docker.java.inside.docker']) {
-							sh "docker login --username ${DOCKER_HUB_USR} --password ${DOCKER_HUB_PSW}"
-							sh 'PROFILE=none ci/verify.sh'
-							sh "ci/clean.sh"
+					docker.image(p['docker.java.main.image']).inside(p['docker.java.inside.docker']) {
+						sh 'PROFILE=none ci/verify.sh'
+						sh "ci/clean.sh"
+					}
+				}
+			}
+		}
+
+		stage("Test other configurations") {
+			when {
+				beforeAgent(true)
+				allOf {
+					branch(pattern: "main|(\\d\\.\\d\\.x)", comparator: "REGEXP")
+					not { triggeredBy 'UpstreamCause' }
+				}
+			}
+			parallel {
+				stage("test: baseline (next)") {
+					agent {
+						label 'data'
+					}
+					options { timeout(time: 30, unit: 'MINUTES') }
+					environment {
+						ARTIFACTORY = credentials("${p['artifactory.credentials']}")
+					}
+					steps {
+						script {
+							docker.image(p['docker.java.next.image']).inside(p['docker.java.inside.docker']) {
+								sh 'PROFILE=none ci/verify.sh'
+								sh "ci/clean.sh"
+							}
 						}
 					}
 				}
@@ -68,17 +93,15 @@ pipeline {
 
 			steps {
 				script {
-					docker.withRegistry(p['docker.registry'], p['docker.credentials']) {
-						docker.image(p['docker.java.main.image']).inside(p['docker.java.inside.basic']) {
-							sh 'MAVEN_OPTS="-Duser.name=jenkins -Duser.home=/tmp/jenkins-home" ./mvnw -s settings.xml -Pci,artifactory -Dmaven.repo.local=/tmp/jenkins-home/.m2/spring-data-elasticsearch-non-root ' +
-									'-Dartifactory.server=https://repo.spring.io ' +
-									"-Dartifactory.username=${ARTIFACTORY_USR} " +
-									"-Dartifactory.password=${ARTIFACTORY_PSW} " +
-									"-Dartifactory.staging-repository=libs-snapshot-local " +
-									"-Dartifactory.build-name=spring-data-elasticsearch " +
-									"-Dartifactory.build-number=${BUILD_NUMBER} " +
-									'-Dmaven.test.skip=true clean deploy -U -B'
-						}
+					docker.image(p['docker.java.main.image']).inside(p['docker.java.inside.basic']) {
+						sh 'MAVEN_OPTS="-Duser.name=jenkins -Duser.home=/tmp/jenkins-home" ./mvnw -s settings.xml -Pci,artifactory -Dmaven.repo.local=/tmp/jenkins-home/.m2/spring-data-elasticsearch-non-root ' +
+								'-Dartifactory.server=https://repo.spring.io ' +
+								"-Dartifactory.username=${ARTIFACTORY_USR} " +
+								"-Dartifactory.password=${ARTIFACTORY_PSW} " +
+								"-Dartifactory.staging-repository=libs-snapshot-local " +
+								"-Dartifactory.build-name=spring-data-elasticsearch " +
+								"-Dartifactory.build-number=${BUILD_NUMBER} " +
+								'-Dmaven.test.skip=true clean deploy -U -B'
 					}
 				}
 			}