Use xvbf with tape-run on circleci

config.yml

 # Javascript Node CircleCI 2.0 configuration file
#
# Check https://circleci.com/docs/2.0/language-javascript/ for more details
#
version: 2
jobs:
  build:
    docker:
      # specify the version you desire here
      - image: cypress/browsers:chrome67

      # Specify service dependencies here if necessary
      # CircleCI maintains a library of pre-built images
      # documented at https://circleci.com/docs/2.0/circleci-images/
      # - image: circleci/mongo:3.4.4

    working_directory: ~/repo

    steps:
      - checkout

      # Download and cache dependencies
      - restore_cache:
          keys:
          - v1-dependencies-{{ checksum "package.json" }}
      #     # fallback to using the latest cache if no exact match is found
      #     - v1-dependencies-

      - run:
          name: Install dependencies
          command: npm ci

      - run: npm run cy:verify

      - save_cache:
          paths:
            - ~/.npm
            - ~/.cache
          key: v1-dependencies-{{ checksum "package.json" }}

      - run:
          name: Start Xvfb
          command: Xvfb -ac :99 -screen 0 1024x768x24 > /dev/null 2>&1
          background: true

      # run tests!
      - run:
          name: Unit tests
          command: npm test

      - run:
          name: Browser unit tests
          command: export DISPLAY=:99 && npm run test-browser

      - run:
          name: Cypress tests
          command:  npm run cypress-ci