peline:
  # this code will create a dummy Dockerfile. This is just
  # here so that our yaml file is self-contained.
  setup:
    image: golang
    commands:
      - |
        cat <<EOF > index.html
        hello world
        EOF
      - |
        cat <<EOF > Dockerfile
        FROM busybox
        ADD index.html /www/index.html
        EXPOSE 8000
        CMD httpd -p 8000 -h /www; tail -f /dev/null
        EOF

  build:
    image: docker:dind
    environment:
      - DOCKER_HOST=tcp://docker:2375
    commands:
      - sleep 5
      - docker ps
      - docker build -t hello-world .
  
  # start the container using a detached (non-blocking)
  # step. Bonus we can see our container logs in the
  # build output.
  run:
    image: docker:dind
    detach: true
    environment:
      - DOCKER_HOST=tcp://docker:2375
    commands:
      - docker run -p 8000:8000 hello-world

  # curl the container to test it is up and running.
  # notice that we use `docker:8000` since the container
  # is running in the docker service container.
  test:
    image: golang # because I know it has curl installed
    commands:
      - curl -v http://docker:8000

services:
  docker:
    image: docker:dind
    privileged: truepath: /var/run/docker.sock