Docker-in-Docker approach to run Jenkins as a Docker container

docker-compose.jenkins-dind.yml

# This docker-compose file intent to create a multi-container application
# that runs a Jenkins container connected via TLS to a Docker-in-Docker (dind) container as Docker daemon.
#
# Advice about this approach can be found at: 
# http://jpetazzo.github.io/2015/09/03/do-not-use-docker-in-docker-for-ci/
#
# As well discussion about another alternatives on this setup can be found at:
# https://forums.docker.com/t/using-docker-in-a-dockerized-jenkins-container/322/11
#
# Quick reference about Docker-in-Docker can be fount at:
# https://hub.docker.com/_/docker
# 
# Main source: https://www.jenkins.io/doc/tutorials/create-a-pipeline-in-blue-ocean/

version: '3.1'

networks:
  docker:

volumes:
  jenkins-data:
  jenkins-docker-certs:

services:

  jenkins:
    image: jenkinsci/blueocean
    restart: always
    networks:
      - docker
    ports:
      - 8080:8080
      - 50000:50000
    tty: true
    volumes:
      - jenkins-data:/var/jenkins_home
      - jenkins-docker-certs:/certs/client:ro
      - $HOME:/home
    environment:
      - DOCKER_HOST=tcp://docker:2376
      - DOCKER_CERT_PATH=/certs/client
      - DOCKER_TLS_VERIFY=1

  dind:
    image: docker:dind
    privileged: true
    restart: always
    networks:
      docker:
        aliases: 
          - docker
    ports:
      - 2376:2376
    tty: true
    volumes:
      - jenkins-data:/var/jenkins_home
      - jenkins-docker-certs:/certs/client
      - $HOME:/home
    environment:
      - DOCKER_TLS_CERTDIR=/certs