# Create Jenkins CI pipeline

Create a new Jenkins pipeline and enable the option "GitHub hook trigger for GITScm polling"

<figure><img src="https://3157512683-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FSdKCeOdDbFafu1TTNFV5%2Fuploads%2FLGfenh3fYpmC716QsY4s%2Fimage.png?alt=media&#x26;token=0f925dcc-b628-4d0f-a2ca-7182f99189fd" alt=""><figcaption></figcaption></figure>

In the pipeline definition, set the SCM as Git and paste the repository URL. The branch should be set as "main"

<figure><img src="https://3157512683-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FSdKCeOdDbFafu1TTNFV5%2Fuploads%2F9MMf9y8nsElXPw1MJSkr%2Fimage.png?alt=media&#x26;token=cf8906f7-4cee-45f3-b5f0-ad721c1347bb" alt=""><figcaption></figcaption></figure>

The path to the script for Jenkinsfile must be set to *spring-boot-app/JenkinsFile* as this is the place where the Jenkinsfile is stored. Then click on Save to create the pipeline.

<figure><img src="https://3157512683-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FSdKCeOdDbFafu1TTNFV5%2Fuploads%2FByKR8PHPDs4C4bfTORXM%2Fimage.png?alt=media&#x26;token=53beeb96-1f18-4a24-8e63-98adc803b559" alt=""><figcaption></figcaption></figure>

### JenkinsFile for the CI pipeline

The Jenkinsfile to create the CI pipeline looks like this:

```groovy
pipeline {
  agent {
  // Setup a Docker agent to run the Jenkins job
    docker {
      image 'abhishekf5/maven-abhishek-docker-agent:v1'
      args '--user root -v /var/run/docker.sock:/var/run/docker.sock' // mount Docker socket to access the host's Docker daemon
    }
  }
  stages {
    stage('Checkout') {
      steps {
        echo "Cloning the code"
        git url:"https://github.com/devops-maestro17/java-cicd-pipeline.git", branch: "main"
      }
    }
    stage('Build and Test') {
      steps {
        sh 'ls -ltr'
        // build the project and create a JAR file
        sh 'cd spring-boot-app && mvn clean package'
      }
    }
    stage('Static Code Analysis') {
      environment {
        SONAR_URL = //URL for SonarQube server
      }
      steps {
        withCredentials([string(credentialsId: 'sonarqube', variable: 'SONAR_AUTH_TOKEN')]) {
          sh 'cd spring-boot-app && mvn sonar:sonar -Dsonar.login=$SONAR_AUTH_TOKEN -Dsonar.host.url=${SONAR_URL}'
        }
      }
    }
    stage('Build and Push Docker Image') {
      environment {
        DOCKER_IMAGE = "containerizeops/java-app-cicd:${BUILD_NUMBER}"
        REGISTRY_CREDENTIALS = credentials('docker-cred')
      }
      steps {
        script {
            sh 'cd spring-boot-app && docker build -t ${DOCKER_IMAGE} .'
            def dockerImage = docker.image("${DOCKER_IMAGE}")
            docker.withRegistry('https://index.docker.io/v1/', "docker-cred") {
                dockerImage.push()
            }
        }
      }
    }
    stage('Update Deployment File') {
        environment {
            GIT_REPO_NAME = "java-cicd-pipeline"
            GIT_USER_NAME = "devops-maestro17"
        }
        steps {
            withCredentials([string(credentialsId: 'github', variable: 'GITHUB_TOKEN')]) {
                sh '''
                    git config user.email "rajdeep_deogharia@outlook.com"
                    git config user.name "devops-maestro17"
                    BUILD_NUMBER=${BUILD_NUMBER}
                    sed -i "s/replaceImageTag/${BUILD_NUMBER}/g" spring-boot-app-manifests/deployment.yml
                    git add spring-boot-app-manifests/deployment.yml
                    git commit -m "Update deployment image to version ${BUILD_NUMBER}"
                    git push https://${GITHUB_TOKEN}@github.com/${GIT_USER_NAME}/${GIT_REPO_NAME} HEAD:main
                '''
            }
        }
    }
  }
}
```