|---------|

PROJECT

create a project, maven java.

create a spring project "https://start.spring.io/" (Web, Actuator) use this hello world example https://spring.io/guides/gs/rest-service/

build project using maven docker image

docker run -v "$PWD":/project -w /project maven:3.3.9-jdk-8 mvn clean package

Run from terminal

java -jar target/actuator-sample-0.0.1-SNAPSHOT.jar

Test the service

Now that the service is up, visit http://localhost:8080/greeting, where you see: http://localhost:9080/greeting

{"id":1,"content":"Hello, World!"}

Provide a name query string parameter with http://localhost:8080/greeting?name=User. Notice how the value of the content attribute changes from "Hello, World!" to "Hello User!": http://localhost:9080/greeting?name=docker donegal

{"id":2,"content":"Hello, User!"}

build image

docker build -t dockerdonegal/helloworld:v1 .

login to docker

https://hub.docker.com/r/dockerdonegal/

docker login
Username: dockerdonegal
Password: {your-docker-hub-password}

push image to

docker push dockerdonegal/helloworld:v1

pull our image and run it.

docker run -it -p 8080:8080 --name actuator dockerdonegal/helloworld:v2

|---------|

TESTING

run

docker run -v "$PWD":/project -w /project maven:3.3.9-jdk-8 mvn test

|---------|

GITLAB

open browser at localhost, or if you set up your host file to rediret to http://ci-cd.dockerdonegal.ie. login to gitlab, if first time you will be prompt for a new password, create one and reenter it (ddpassword). Create a group, in my case I created group name (dd) Create a project then click on the import project and then click github, you will need a Public Access Token you can create one from here https://github.com/settings/tokens on your github page, git it a meaningful name. Import your project. Next you will have a warning message about not allow to commit until you add an ssh key, if you have one already generated you can fine it at ~/.ssh/id_rsa.pub on linux machines.

|---------|

JENKINS
pipelines
https://jenkins.io/doc/pipeline/tour/hello-world/

Add jenkinsfile to root of project

Run Junkins Docker

docker-compose -f pipeline/docker-compose.yml up -d

DOCKER_PATH=$(which docker) docker-compose -f pipeline/docker-compose.yml up -d

NOTE - Pipeline ERROR

[dockerdonegal] Running shell script
+ docker inspect -f . maven:3.3.3
/var/jenkins_home/workspace/dockerdonegal@tmp/durable-049bfc82/script.sh: line 1: docker: not found
[Pipeline] sh
[dockerdonegal] Running shell script
+ docker pull maven:3.3.3
/var/jenkins_home/workspace/dockerdonegal@tmp/durable-2ade8d04/script.sh: line 1: docker: not found
[Pipeline] }
[Pipeline] // stage
[Pipeline] }
[Pipeline] // node
[Pipeline] End of Pipeline
ERROR: script returned exit code 127
Finished: FAILURE

First time running jenkins

https://jenkins.io/doc/tutorials/build-a-java-app-with-maven/ open browser at http://localhost:8090 , follow the on screen message "To ensure Jenkins is securely set up by the administrator, a password has been written to the log (not sure where to find it?) and this file on the server:" run docker logs jenkins to get the password.

bac4b25f3e7d46fe81fd79e8efe8baea

press continue. just install the suggested plugins, unless you know what plugins you only need. should take a few minutes. NEXT, create first admin user

username: docker
password: docker100%
Full name: docker
E-mail address: dockerdonegal@gmail.com

Save and finish button, start using Jenkins button. well, done! Welcome to Jenkins!

Create pipline

|----------------|

DOCKER COMMANDS

# Clean Up
docker rm $(docker ps -a -f status=exited -q)

# build pipeline
docker-compose -f pipeline/docker-compose.yml build

# run pipeline, (jenkins)
docker-compose -f pipeline/docker-compose.yml up -d