The process/jobs

config.yml

# Check https://circleci.com/docs/2.0/language-javascript/ for more details
version: 2.1

orbs:
  aws-s3: circleci/[email protected]
  slack: circleci/[email protected]

jobs:
# Job #1
  build:
    docker:
      - image: circleci/node:11.10
    working_directory: ~/app
    steps:
      - checkout
      # cache dependencies (to speed automation process)
      - restore_cache:
          keys:
            - v1-dependencies-{{ checksum "package.json" }}
            # fallback to using the latest cache if no exact match is found
            - v1-dependencies-
      - run:
          name: Authenticate with registry
          command: echo "//registry.npmjs.org/:_authToken=$NPM_TOKEN" > ~/app/.npmrc
      - run:
          name: Install NPM dependencies - via yarn
          command: yarn install
      - run:
          name: Install Jest Global
          command: yarn global add jest
      - run:
          name: Build Production Assets
          command: yarn run build
      - persist_to_workspace:
          # Must be an absolute path, or relative path from working_directory. This is a directory on the container which is 
          # taken to be the root directory of the workspace.
          root: ~/app
          # Must be relative path from root
          paths:
            - node_modules  # contain dependencies 
            - dist          # contain files we've build for distribution 
      - save_cache:
          paths:
            - node_modules
          key: v1-dependencies-{{ checksum "package.json" }}

# Job #2
  test:
    docker:
      - image: circleci/node:11.10
    working_directory: ~/app
    steps:
      - checkout
      - attach_workspace:
        # Must be an absolute path or relative path from working_directory
          at: ~/app
      - run:
          name: Test
          command: yarn test
      - run:
          name: Generate code coverage
          command: npm run test -- --coverage

# Job #3
  deploy_dev_branches:
    docker:
      - image: circleci/node:11.10
    working_directory: ~/app
    steps:
      - checkout
      - attach_workspace:
        # Must be an absolute path or relative path from working_directory
          at: ~/app
      - run:
          name: apt-get update
          command: sudo apt-get update
      - run:
          name: Install python-dev
          command: sudo apt-get install python-dev
      - run:
          name: Install pip
          command: sudo apt-get install python-pip
      - run:
          name: Install awscli
          command: sudo pip install awscli
      - run:
          name: "What branch am I on?"
          command: echo ${CIRCLE_BRANCH}
      - run:
          name: "What AWS region i am on now?"
          command: echo $AWS_REGION
      - aws-s3/sync:
          from: ~/app/dist/my-project
          to: 's3://bucket-assets/${CIRCLE_PROJECT_REPONAME}/${CIRCLE_BRANCH}/${CIRCLE_SHA1}'
          arguments: |
            --region $AWS_REGION \
            --acl public-read

# Job #4
  deploy_production_latest:
    docker:
      - image: circleci/node:11.10
    working_directory: ~/app
    steps:
      - checkout
      - attach_workspace:
        # Must be an absolute path or relative path from working_directory
          at: ~/app
      - run:
          name: apt-get update
          command: sudo apt-get update
      - run:
          name: Install python-dev
          command: sudo apt-get install python-dev
      - run:
          name: Install pip
          command: sudo apt-get install python-pip
      - run:
          name: Install awscli
          command: sudo pip install awscli
      - run:
          name: "What branch am I on?"
          command: echo ${CIRCLE_BRANCH}
      - run:
          name: "What AWS region i am on now?"
          command: echo $AWS_REGION
      - aws-s3/sync:  # first copy per commit hash (easier to locate files)
          from: ~/app/dist/my-project
          to: 's3://bucket-assets/${CIRCLE_PROJECT_REPONAME}/${CIRCLE_BRANCH}/${CIRCLE_SHA1}'
          arguments: |
            --region $AWS_REGION \
            --acl public-read
      - slack/status:
          success_message: Hey @${CIRCLE_USERNAME}, job is done successfully! :)
          failure_message: Hey @${CIRCLE_USERNAME}, job failed! :(
          only_for_branches: master

workflows:
  version: 2.1
  build-test-and-deploy:
    jobs:
      - build: # job #1
          context: dev
      - test: # job #2
          context: dev
          requires:
            - build
      - deploy_dev_branches: # job #3
          context: dev
          requires:
            - test
          filters:
            branches:
              ignore:   # We ignore master/latest here (this is branch deployment)
                - master
      - deploy_production_latest: # job #4
          context: dev
          requires:
            - test
          filters:
            branches:
              only:    # We deploy latest only in master
                - master