circleCI configuration

config.yml

withDocker: &withDocker
  docker:
    - image: circleci/node:9.6
version: 2
jobs:
  build:
    working_directory: ~/ProjectDirectory
    <<: *withDocker
    steps:
      - checkout
      - restore_cache:
          key: dependency-cache-{{ checksum "package.json" }}
      - run:
          name: install_packages
          command: yarn install
      - save_cache:
          key: dependency-cache-{{ checksum "package.json" }}
          paths:
            - ./node_modules
      - run:
          name: test
          command: yarn test
  deploy:
    working_directory: ~/ProjectDirectory
    <<: *withDocker
    steps:
      - checkout
      - restore_cache:
          key: dependency-cache-{{ checksum "package.json" }}
      - run:
          name: install_packages
          command: yarn install
      - save_cache:
          key: dependency-cache-{{ checksum "package.json" }}
          paths:
            - ./node_modules
      - run:
          name: install firebase
          command: yarn add firebase-tools --dev
      - run:
          name: build both apps, command might be different
          command: yarn build
      - run:
          name: deploy appone
          command: ./node_modules/.bin/firebase deploy -P projectone --only hosting appone --token=$FIREBASE_TOKEN
      - run:
          name: deploy apptwo
          command: ./node_modules/.bin/firebase deploy -P projecttwo --only hosting apptwo --token=$FIREBASE_TOKEN
workflows:
  version: 2
  build_and_deploy:
    jobs:
      - build
      - deploy:
          requires:
            - build
          filters:
            branches:
              only: master