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

@@ -1,25 +1,47 @@
-wrappedNode(label: 'linux && x86_64', cleanWorkspace: true) {
-  timeout(time: 60, unit: 'MINUTES') {
-    stage "Git Checkout"
-    checkout scm
+pipeline {
+    agent {
+        label "linux && x86_64"
+    }
 
-    stage "Docker info"
-    sh "docker version"
-    sh "docker info"
+    options {
+        timeout(time: 60, unit: 'MINUTES')
+    }
 
-    stage "e2e (non-experimental)"
-    sh "E2E_UNIQUE_ID=clie2e${BUILD_NUMBER} \
-        IMAGE_TAG=clie2e${BUILD_NUMBER} \
-        DOCKER_BUILDKIT=1 make -f docker.Makefile test-e2e-non-experimental"
-
-    stage "e2e (experimental)"
-    sh "E2E_UNIQUE_ID=clie2e${BUILD_NUMBER} \
-        IMAGE_TAG=clie2e${BUILD_NUMBER} \
-        DOCKER_BUILDKIT=1 make -f docker.Makefile test-e2e-experimental"
-
-    stage "e2e (ssh connhelper)"
-    sh "E2E_UNIQUE_ID=clie2e${BUILD_NUMBER} \
-        IMAGE_TAG=clie2e${BUILD_NUMBER} \
-        DOCKER_BUILDKIT=1 make -f docker.Makefile test-e2e-connhelper-ssh"
-  }
+    stages {
+        stage("Docker info") {
+            steps {
+                sh "docker version"
+                sh "docker info"
+            }
+        }
+        stage("e2e (non-experimental) - stable engine") {
+            steps {
+                sh "E2E_UNIQUE_ID=clie2e${BUILD_NUMBER} \
+                    IMAGE_TAG=clie2e${BUILD_NUMBER} \
+                    DOCKER_BUILDKIT=1 make -f docker.Makefile test-e2e-non-experimental"
+            }
+        }
+        stage("e2e (non-experimental) - 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-non-experimental"
+            }
+        }
+        stage("e2e (experimental)") {
+            steps {
+                sh "E2E_UNIQUE_ID=clie2e${BUILD_NUMBER} \
+                    IMAGE_TAG=clie2e${BUILD_NUMBER} \
+                    DOCKER_BUILDKIT=1 make -f docker.Makefile test-e2e-experimental"
+            }
+        }
+        stage("e2e (ssh connhelper)") {
+            steps {
+                sh "E2E_UNIQUE_ID=clie2e${BUILD_NUMBER} \
+                    IMAGE_TAG=clie2e${BUILD_NUMBER} \
+                    DOCKER_BUILDKIT=1 make -f docker.Makefile test-e2e-connhelper-ssh"
+            }
+        }
+    }
 }