Cancel old pipeline runs if a new commit arrives before the old build finishes

Jenkinsfile

@@ -16,6 +16,14 @@ import org.hibernate.jenkins.pipeline.helpers.job.JobHelper
 @Field final String NODE_PATTERN_BASE = 'Worker&&Containers'
 @Field List<BuildEnvironment> environments
 
+// Cancel previous runs automatically by reaching milestones
+// See https://issues.jenkins.io/browse/JENKINS-43353
+def buildNumber = BUILD_NUMBER as int;
+if (buildNumber > 1) {
+	milestone(buildNumber - 1)
+}
+milestone(buildNumber)
+
 this.helper = new JobHelper(this)
 
 helper.runWithNotification {