Add docker image build in Jenkinsfile

Jenkinsfile

@@ -1,3 +1,6 @@
+def artifact="deployments/launcher/target/*-skinny.tar.gz"
+def img_build_hook = null
+
 pipeline {
     agent { label 'maven' }
     stages {
@@ -7,24 +10,65 @@ pipeline {
             }
         }
         stage('Build') {
+            steps {
+                sh 'mvn -B -V clean verify'
+            }
+        }
+        stage('Function Test') {
             when {
                 expression { env.CHANGE_ID != null } // Pull request
             }
             steps {
-                sh 'mvn -B -V clean verify -Prun-its -Pci'
+                sh 'mvn -B -V verify -Prun-its -Pci'
             }
         }
         stage('Deploy') {
             when { branch 'master' }
             steps {
                 echo "Deploy"
-                sh 'mvn help:effective-settings -B -V clean deploy -e -s ~/sonatype/settings.xml'
+                sh 'mvn help:effective-settings -B -V deploy -e -s ~/sonatype/settings.xml'
             }
         }
-    }
-    post {
-        success {
-            archiveArtifacts artifacts: 'deployments/launcher/target/*-skinny.tar.gz', fingerprint: true
+        stage('Archive') {
+            steps {
+                echo "Archive"
+                archiveArtifacts artifacts: "$artifact", fingerprint: true
+            }
+        }
+        stage('Check Image Build Hook') {
+            when {
+                expression { env.IMG_BUILD_HOOKS != null }
+            }
+            steps {
+                echo "Check Image Build Hook"
+                script {
+                    def jsonObj = readJSON text: env.IMG_BUILD_HOOKS
+                    if (env.GIT_URL in jsonObj) {
+                        img_build_hook = jsonObj[env.GIT_URL]
+                    }
+                }
+            }
+        }
+        stage('Build & Push Image') {
+            when {
+                allOf {
+                    expression { img_build_hook != null }
+                    expression { env.CHANGE_ID == null } // Not pull request
+                }
+            }
+            steps {
+                script {
+                    echo "Build docker image"
+                    def artifact_file = sh(script: "ls $artifact", returnStdout: true)?.trim()
+                    def tarball_url = "${BUILD_URL}artifact/$artifact_file"
+                    sh """cat <<EOF > payload_file.yaml
+env:
+   - name: "tarball_url"
+     value: "${tarball_url}"
+EOF"""
+                    sh "curl -H 'Content-Type: application/yaml' --data-binary @payload_file.yaml -k -X POST ${img_build_hook}"
+                }
+            }
         }
     }
 }