config.yml

version: 2.0
      
jobs:
  build:
    working_directory: ~/knex
    docker:
      - image: hashicorp/terraform:0.10.0
    steps:
      - checkout
      - run:
          name: Initialize terraform
          command: 'terraform init'
      - run:
          name: Fetch Terraform Statefile
          command: 'terraform get'
      - run:
          name: Validate Terraform Config
          command: 'terraform validate'

  test:
    working_directory: ~/knex
    docker:
      - image: hashicorp/terraform:0.10.0
    steps:
      - checkout
      - run:
          name: Plan Terraform Deployment
          command: 'terraform plan -out=terraform.plan'

  deploy:
    docker:
      - image: hashicorp/terraform:0.10.0
    steps:
      - checkout
      - deploy:
          command: |
            if [ "${CIRCLE_BRANCH}" == "master" ];
              then terraform apply terraform.plan;
            fi

workflows:
  version: 2
  build_and_test:
    jobs:
      - build
      - test:
          requires:
            - build
      - hold:
          type: approval
          requires:
            - build
            - test
      - deploy:
          requires:
            - hold
          filters:
            branches:
              only: master