config.yml

version: 2
jobs:
  build_and_push: &build_and_push
    docker:
      - image: docker:git
    steps:
      - checkout
      - setup_remote_docker

      - run:
          name: Build image
          command: |
            apk update
            apk add gettext  # for envsubst command
            envsubst < "./${IMAGE_TYPE}/Dockerfile" | \
              docker build -t "${IMAGE_TYPE}" -f - "${IMAGE_TYPE}"

      - run:
          name: Push images
          command: |
            only_on_branch=master
            if [ "${CIRCLE_BRANCH}" == "${only_on_branch}" ]; then
              if [ ! -z "${DOCKER_USER}" ] && [ ! -z "${DOCKER_PASS}" ]; then
                echo "${DOCKER_PASS}" | docker login -u "${DOCKER_USER}" --password-stdin
                for tag in ${TAGS}; do
                  IMAGE_TAG=${CIRCLE_PROJECT_USERNAME}/${IMAGE_NAME}:${tag}
                  echo "Tagging image ${IMAGE_TAG}"
                  docker tag "${IMAGE_TYPE}" "${IMAGE_TAG}"
                  docker push "${IMAGE_TAG}"
                done
              else
                echo "Not pushing: no DOCKER_USER and DOCKER_PASS variables."
              fi
            else
              echo "Not pushing: branch '${CIRCLE_BRANCH}' is not '${only_on_branch}'."
            fi

  python-3.6-alpine:
    <<: *build_and_push
    environment:
      - IMAGE_TYPE=python
      - IMAGE_NAME=python
      - TAGS=3.6-alpine
      - PYTHON_VERSION=3.6
      - REQUIREMENTS=base
  python-3.7-alpine:
    <<: *build_and_push
    environment:
      - IMAGE_TYPE=python
      - IMAGE_NAME=python
      - TAGS=3.7-alpine alpine latest
      - PYTHON_VERSION=3.7
      - REQUIREMENTS=base
  django-2.0-python-3.6-alpine:
    <<: *build_and_push
    environment:
      - IMAGE_TYPE=python
      - IMAGE_NAME=django
      - TAGS=2.0-py3.6 2.0-py3.6-alpine
      - PYTHON_VERSION=3.6
      - REQUIREMENTS=django-2.0
  django-2.0-python-3.7-alpine:
    <<: *build_and_push
    environment:
      - IMAGE_TYPE=python
      - IMAGE_NAME=django
      - TAGS=2.0 2.0-py3.7 2.0-py3.7-alpine 2.0-alpine
      - PYTHON_VERSION=3.7
      - REQUIREMENTS=django-2.0
  django-2.1-python-3.6-alpine:
    <<: *build_and_push
    environment:
      - IMAGE_TYPE=python
      - IMAGE_NAME=django
      - TAGS=2.1-py3.6 2.1-py3.6-alpine py3.6 py3.6-alpine
      - PYTHON_VERSION=3.6
      - REQUIREMENTS=django-2.1
  django-2.1-python-3.7-alpine:
    <<: *build_and_push
    environment:
      - IMAGE_TYPE=python
      - IMAGE_NAME=django
      - TAGS=2.1 2.1-py3.7 2.1-py3.7-alpine py3.7 py3.7-alpine 2.1-alpine alpine latest
      - PYTHON_VERSION=3.7
      - REQUIREMENTS=django-2.1

  ansible-2.6:
    <<: *build_and_push
    environment:
      - IMAGE_TYPE=ansible-playbook
      - IMAGE_NAME=ansible-playbook
      - TAGS=2.6
      - ANSIBLE_VERSION=2.6.0

  ansible-2.7:
    <<: *build_and_push
    environment:
      - IMAGE_TYPE=ansible-playbook
      - IMAGE_NAME=ansible-playbook
      - TAGS=2.7
      - ANSIBLE_VERSION=2.7.0

  ucam-webauth-proxy:
    <<: *build_and_push
    environment:
      - IMAGE_TYPE=ucam-webauth-proxy
      - IMAGE_NAME=ucam-webauth-proxy
      - TAGS=0.9 0.9.1 0.9-ucamwebauth-2.0.5 0.9-ucamwebauth-latest 0.9.1-ucamwebauth-2.0.5 0.9.1-ucamwebauth-latest ucamwebauth-2.0.5 ucamwebauth-latest latest

workflows:
  version: 2

  # A workflow which happens on each commit
  build_and_push: &build_and_push_workflow
    jobs:
      - python-3.6-alpine
      - django-2.0-python-3.6-alpine
      - django-2.1-python-3.6-alpine
      - python-3.7-alpine
      - django-2.0-python-3.7-alpine
      - django-2.1-python-3.7-alpine
      - ansible-2.6
      - ansible-2.7
      - ucam-webauth-proxy

#  # The build_and_push flow but run nightly
#  nightly:
#    <<: *build_and_push_workflow
#    triggers:
#      - schedule:
#          cron: "13 3 * * *"
#          filters:
#            branches:
#              only:
#                - master