Update Jenkinsfile

Dockerfile

@@ -0,0 +1,8 @@
+FROM openjdk:8-jre-alpine
+
+EXPOSE 8080
+
+COPY ./target/java-maven-app-1.0-SNAPSHOT.jar /usr/app/
+WORKDIR /usr/app
+
+ENTRYPOINT ["java", "-jar", "java-maven-app-1.0-SNAPSHOT.jar"]

Jenkinsfile

@@ -1,36 +1,52 @@
-def gv
+#!/usr/bin/env groovy
+
+library identifier: 'jenkins-shared-library@master', retriever: modernSCM(
+    [$class: 'GitSCMSource',
+     remote: 'https://gitlab.com/nanuchi/jenkins-shared-library.git',
+     credentialsId: 'gitlab-credentials'
+    ]
+)
 
 pipeline {
     agent any
+    tools {
+        maven 'Maven'
+    }
+    environment {
+        IMAGE_NAME = 'nanajanashia/demo-app:java-maven-2.0'
+    }
     stages {
-        stage("init") {
+        stage('build app') {
             steps {
                script {
-                    gv = load "script.groovy"
+                  echo 'building application jar...'
+                  buildJar()
                }
             }
         }
-        stage("build jar") {
+        stage('build image') {
             steps {
                 script {
-                    echo "building jar"
-                    //gv.buildJar()
+                   echo 'building docker image...'
+                   buildImage(env.IMAGE_NAME)
+                   dockerLogin()
+                   dockerPush(env.IMAGE_NAME)
                 }
             }
         }
-        stage("build image") {
+        stage('deploy') {
             steps {
                 script {
-                    echo "building image"
-                    //gv.buildImage()
-                }
-            }
-        }
-        stage("deploy") {
-            steps {
-                script {
-                    echo "deploying"
-                    //gv.deployApp()
+                   echo 'deploying docker image to EC2...'
+
+                   def shellCmd = "bash ./server-cmds.sh ${IMAGE_NAME}"
+                   def ec2Instance = "ec2-user@35.180.251.121"
+
+                   sshagent(['ec2-server-key']) {
+                       sh "scp -o StrictHostKeyChecking=no server-cmds.sh ${ec2Instance}:/home/ec2-user"
+                       sh "scp -o StrictHostKeyChecking=no docker-compose.yaml ${ec2Instance}:/home/ec2-user"
+                       sh "ssh -o StrictHostKeyChecking=no ${ec2Instance} ${shellCmd}"
+                   }
                 }
             }
         }

docker-compose.yaml

@@ -0,0 +1,12 @@
+version: '3.8'
+services:
+    java-maven-app:
+      image: ${IMAGE}
+      ports:
+        - 8080:8080
+    postgres:
+      image: postgres:13
+      ports:
+        - 5432:5432
+      environment:
+        - POSTGRES_PASSWORD=my-pwd

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>com.example</groupId>
     <artifactId>java-maven-app</artifactId>
-    <version>1.1.0-SNAPSHOT</version>
+    <version>1.0-SNAPSHOT</version>
 
     <build>
         <plugins>
@@ -22,20 +22,13 @@
                     </execution>
                 </executions>
             </plugin>
-
-            <!-- to handle any Java version mismatch, add the following configuration for maven-compiler-plugin -->
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.6.0</version>
-                <configuration>
-                    <source>1.8</source>
-                    <target>1.8</target>
-                </configuration>
-            </plugin>
         </plugins>
     </build>
-
+    <properties>
+        <java.version>1.8</java.version>
+        <maven.compiler.source>1.8</maven.compiler.source>
+        <maven.compiler.target>1.8</maven.compiler.target>
+    </properties>
     <dependencies>
         <dependency>
             <groupId>org.springframework.boot</groupId>

script.groovy

@@ -1,19 +0,0 @@
-def buildJar() {
-    echo "building the application..."
-    sh 'mvn package'
-} 
-
-def buildImage() {
-    echo "building the docker image..."
-    withCredentials([usernamePassword(credentialsId: 'docker-hub-repo', passwordVariable: 'PASS', usernameVariable: 'USER')]) {
-        sh 'docker build -t nanajanashia/demo-app:jma-2.0 .'
-        sh "echo $PASS | docker login -u $USER --password-stdin"
-        sh 'docker push nanajanashia/demo-app:jma-2.0'
-    }
-} 
-
-def deployApp() {
-    echo 'deploying the application...'
-} 
-
-return this

server-cmds.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+
+export IMAGE=$1
+docker-compose -f docker-compose.yaml up --detach
+echo "success"

src/test/java/AppTest.java

@@ -0,0 +1,16 @@
+import com.example.Application;
+import org.junit.Test;
+import static org.junit.Assert.*;
+
+public class AppTest {
+
+    @Test
+    public void testApp() {
+        Application myApp = new Application();
+
+        String result = myApp.getStatus();
+
+        assertEquals("OK", result);
+    }
+
+}