pipeline.yml

---
resources:
  - name: postgres
    type: docker-image
    source:
      repository: postgres
      tag: 9.6.2-alpine

  - name: ruby
    type: docker-image
    source:
      repository: ruby
      tag: 2.3.4

  - name: dcind-image
    type: docker-image
    source:
      repository: amidos/dcind

jobs:
- name: Tests
  plan:
    - aggregate:
      - get: code
        trigger: true
      - get: postgres
        params: {save: true}
      - get: ruby
        params: {save: true}
      - get: dcind-image
    - task: Run Tests
      image: dcind-image
      privileged: true
      config:
        platform: linux
        inputs:
          - name: code
          - name: postgres
          - name: ruby
        run:
          path: sh
          args:
            - -exc
            - |
                source /docker-lib.sh
                start_docker
                # Strictly speaking, preloading of the image is not required. However you might want it for a couple of reasons:
                # - If the image is from a private repository, it is much easier to let concourse pull it, and then pass it through to the task.
                # - When the image is passed to the task, Concourse can often get the image from its cache.
                docker load -i postgres/image
                docker tag "$(cat postgres/image-id)" "$(cat postgres/repository):$(cat postgres/tag)"

                docker load -i ruby/image
                docker tag "$(cat ruby/image-id)" "$(cat ruby/repository):$(cat ruby/tag)"

                # This is just to visually check in the log that image have been loaded successfully.
                docker images

                # Run the tests container and its dependencies.
                docker-compose -f code/ci/compose.yml run tests

                docker volume ls -q

                # Cleanup.
                # Not sure that this is required.
                # It's quite possible that Concourse is smart enough to clean up the Docker mess itself.
                docker-compose -f code/ci/compose.yml down
                docker volume rm $(docker volume ls -q)