Run e2e tests with different engine version on Jenkins

Rewrite Jenkinsfile to new declarative syntax without parallel as the e2e framework is not tailored for than (container name clash, port clash,...)

Signed-off-by: Tibor Vass <tibor@docker.com>
Signed-off-by: Silvin Lubecki <silvin.lubecki@docker.com>

Jenkinsfile

@@ -1,13 +1,33 @@
-wrappedNode(label: 'linux && x86_64', cleanWorkspace: true) {
-  timeout(time: 60, unit: 'MINUTES') {
-    stage "Git Checkout"
-    checkout scm
+pipeline {
+    agent {
+        label "linux && x86_64"
+    }
 
-    stage "Run end-to-end test suite"
-    sh "docker version"
-    sh "docker info"
-    sh "E2E_UNIQUE_ID=clie2e${BUILD_NUMBER} \
-        IMAGE_TAG=clie2e${BUILD_NUMBER} \
-        DOCKER_BUILDKIT=1 make -f docker.Makefile test-e2e"
-  }
+    options {
+        timeout(time: 60, unit: 'MINUTES')
+    }
+
+    stages {
+        stage("Docker info") {
+            steps {
+                sh "docker version"
+                sh "docker info"
+            }
+        }
+        stage("E2E Tests - stable engine") {
+            steps {
+                sh "E2E_UNIQUE_ID=clie2e${BUILD_NUMBER} \
+                  IMAGE_TAG=clie2e${BUILD_NUMBER} \
+                  DOCKER_BUILDKIT=1 make -f docker.Makefile test-e2e"
+            }
+        }
+        stage("E2E Tests - 18.09 engine") {
+            steps {
+                sh "E2E_ENGINE_VERSION=18.09-dind \
+                  E2E_UNIQUE_ID=clie2e${BUILD_NUMBER} \
+                  IMAGE_TAG=clie2e${BUILD_NUMBER} \
+                  DOCKER_BUILDKIT=1 make -f docker.Makefile test-e2e"
+            }
+        }
+    }
 }