config.yml

# define our templated standard build config here
# this has to go at the start, so we can reference it in our CircleCI job config later
build-config: &build-config
  docker:
    - image: docker:stable-git
  steps:
    - checkout
    - setup_remote_docker
    - restore_cache:
        keys:
          - v1-{{ .Environment.CIRCLE_JOB }}-{{ .Branch }}
        paths:
          - /caches/docker-cache.tar
    - run:
        name: Load previous Docker image layer cache
        command: |
          set +o pipefail
          docker load -i /caches/docker-cache.tar | true
    - run:
        name: Set Docker image tag based on branch or git tag
        command: |
          if [ ! -z "${CIRCLE_TAG}" ] ; then
            echo 'export DOCKER_TAG=${CIRCLE_TAG}' >> $BASH_ENV
          elif [ "${CIRCLE_BRANCH}" == "master" ] ; then
            echo 'export DOCKER_TAG=latest' >> $BASH_ENV
          else
            echo 'export DOCKER_TAG=$( echo ${CIRCLE_BRANCH} | cut -f 2 -d / )' >> $BASH_ENV
          fi
    - run:
        name: Build Docker image
        command: |
          source ${BASH_ENV}
          docker build --cache-from=coco/${CIRCLE_JOB}:${DOCKER_TAG} -t coco/${CIRCLE_JOB}:${DOCKER_TAG} ${CIRCLE_JOB}/
    - run:
        name: Create new Docker image layer cache
        command: |
          source ${BASH_ENV}
          mkdir -p /caches
          docker save -o /caches/docker-cache.tar coco/${CIRCLE_JOB}:${DOCKER_TAG}
    - save_cache:
        key: v1-{{ .Environment.CIRCLE_JOB }}-{{ .Branch }}-{{ epoch }}
        paths:
          - /caches/docker-cache.tar
    - deploy:
        name: Push Docker image
        command: |
          source ${BASH_ENV}
          echo Pushing coco/${CIRCLE_JOB}:${DOCKER_TAG}
          docker login -u ${DOCKER_USER} -p ${DOCKER_ACCESS_TOKEN}
          docker push coco/${CIRCLE_JOB}:${DOCKER_TAG}

# define our CircleCI config here
version: 2
workflows:
  version: 2
  build:
    jobs:
      - trigger-provisioner-builds:
          filters:
            tags:
              only: /.*/
          context: cm-team-dockerhub
jobs:
  trigger-provisioner-builds:
    docker:
      - image: docker:stable-git
    steps:
      - checkout
      - run:
          name: Trigger builds of updated provisioners
          command: |
            apk -q --no-progress upgrade --no-cache libcurl
            apk -q --no-progress --update add curl
            .circleci/build_provisioners.sh
  content-jenkins-provisioner: *build-config
  pac-aurora-provisioner: *build-config
  upp-concept-publishing-provisioner: *build-config
  upp-elasticsearch-provisioner: *build-config
  upp-factset-provisioner: *build-config
  upp-concept-notifications-provisioner: *build-config
  upp-concept-events-pipeline-provisioner: *build-config