Lab_Jenkins

Define Docker Infra

    docker network create jenkins
    docker network list
    docker network inspect jenkins

Define Docker image

ARG VERSION_SERVER="2.484-jdk17"

FROM --platform=linux/amd64 jenkins/jenkins:$VERSION_SERVER
USER root
RUN apt-get update && apt-get install -y lsb-release
RUN curl -fsSLo /usr/share/keyrings/docker-archive-keyring.asc \
  https://download.docker.com/linux/debian/gpg
RUN echo "deb [arch=$(dpkg --print-architecture) \
  signed-by=/usr/share/keyrings/docker-archive-keyring.asc] \
  https://download.docker.com/linux/debian \
  $(lsb_release -cs) stable" > /etc/apt/sources.list.d/docker.list
RUN apt-get update && apt-get install -y docker-ce-cli
USER jenkins
RUN jenkins-plugin-cli --plugins "blueocean docker-workflow"

Build Docker image

docker build -t myjenkins-blueocean:2.484-jdk17 -t myjenkins-blueocean:latest .

Host Container Locally

VERSION_SERVER="2.484-jdk17"

docker run \
  --name myjenkins-blueocean \
  --restart=on-failure \
  --detach \
  --network jenkins \
  --env DOCKER_HOST=tcp://docker:2376 \
  --env DOCKER_CERT_PATH=/certs/client \
  --env DOCKER_TLS_VERIFY=1 \
  --publish 8080:8080 \
  --publish 50000:50000 \
  --volume jenkins-data:/var/jenkins_home \
  --volume jenkins-docker-certs:/certs/client:ro \
  myjenkins-blueocean:$VERSION_SERVER

Accessing Server

docker exec -it myjenkins-blueocean bash

Setup Server

From Browser

http://localhost:8080

From Container

cat /var/jenkins_home/secrets/initialAdminPassword

or

docker exec myjenkins-blueocean cat /var/jenkins_home/secrets/initialAdminPassword

From Browser

Copy Password *

Setup Docker Agent

Setup A Dockerfile

File located at /Docker_Agent/Dockerfile

Create build and push image

docker login -u "cazofeifacr" -p "****" docker.io

VERSION_CLIENT="alpine-jdk17"
docker build -t cazofeifacr/myjenkins-agent-python:$VERSION_CLIENT -t cazofeifacr/myjenkins-agent-python:latest .

 docker push cazofeifacr/myjenkins-agent-python:latest
 docker push cazofeifacr/myjenkins-agent-python:alpine-jdk17

Installation Docker Reference:

https://www.jenkins.io/doc/book/installing/docker/

Bridge

https://hub.docker.com/r/alpine/socat/

docker pull alpine/socat
docker run -d --restart=always -p 127.0.0.1:2376:2375 --network jenkins -v /var/run/docker.sock:/var/run/docker.sock alpine/socat tcp-listen:2375,fork,reuseaddr unix-connect:/var/run/docker.sock

docker inspect <Container_ID> | grep IPAddress

alpine/socat container to forward traffic from Jenkins to Docker Desktop on Host Machine

https://stackoverflow.com/questions/47709208/how-to-find-docker-host-uri-to-be-used-in-jenkins-docker-plugin