Dockerized Jenkins with Docker

start_jenkins.sh

#!/usr/bin/env bash

JENKINS_VERSION=2.89.4
JENKINS_HOME_VOLUME=jenkins_home

docker run -d --rm \
  --name jenkins \
  -p 8080:8080 \
  -p 50000:50000 \
  -v ${JENKINS_HOME_VOLUME}:/var/jenkins_home \
  -v /var/run/docker.sock:/var/run/docker.sock \
  h1kkan/jenkins-docker:${JENKINS_VERSION}

# Match ID of the docker group inside the container so it can use host's Docker daemon
docker exec --user root jenkins groupmod -g $(grep docker /etc/group | cut -d':' -f3) docker

# Restart Jenkins to apply the GID change
docker restart jenkins