simple-java-maven-app

This repository is for the Build a Java app with Maven tutorial in the Jenkins User Documentation.

The repository contains a simple Java application which outputs the string "Hello world!" and is accompanied by a couple of unit tests to check that the main application works as expected. The results of these tests are saved to a JUnit XML report.

The jenkins directory contains an example of the Jenkinsfile (i.e. Pipeline) you'll be creating yourself during the tutorial and the scripts subdirectory contains a shell script with commands that are executed when Jenkins processes the "Deliver" stage of your Pipeline.

Docker

Create own image

Create Dockerfile

use official image as base image (jave 11 + maven 3.8): FROM amd64/maven:3.8.1-adoptopenjdk-11
give user root access: USER root
use shell to run commmands: RUN <cmd>

Build image from Dockerfile

docker build -f <Dockerfile-name> -t <image-name> .
In my case: docker build -f Dockerfile -t linux-maven-openjdk-sbom-tools .

Run image as container

docker run --name <image-name> --rm --detach
--rm --detach: Remove Docker image when exiting, and don't run in foreground
You can also do it in Jenkins:

docker {
    image 'amd64/maven:3.8.1-adoptopenjdk-11' 
    args '--privileged -v /root/.m2:/root/.m2 -u root'
}

Push image to repo

tag image: docker tag firstimage YOUR_DOCKERHUB_NAME/firstimage

docker tag linux-maven-openjdk-sbom-tools mrtnbm/linux-maven-openjdk-sbom-tools

push image docker push YOUR_DOCKERHUB_NAME/firstimage

docker push mrtnbm/linux-maven-openjdk-sbom-tools