CircleCI 2.0 Laravel build configuration with PHP 7.1, NodeJS, and MySQL support. Runs both PHPunit as well as Laravel Dusk. Proper GD configuration for image editing purposes. Several linters included (requires including them in composer / package.json).

config.yml

version: 2

jobs:
  build:
    working_directory: ~/user/repo

    environment:
      BASH_ENV: ~/.bashrc

    docker:
      - image: circleci/php:7.1-node-browsers
        environment:
          APP_ENV: testing
          DB_CONNECTION: mysql
          DB_DATABASE: circle_test
          DB_USERNAME: root
          DB_PASSWORD: ubuntu
          SESSION_DRIVER: database
          CACHE_DRIVER: file

      - image: circleci/mysql:5.7
        environment:
          - MYSQL_ALLOW_EMPTY_PASSWORD=true
          - MYSQL_ROOT_PASSWORD=ubuntu
          - MYSQL_USER=ubuntu
          - MYSQL_PASSWORD=ubuntu
          - MYSQL_DATABASE=circle_test

    steps:
      - run:
          name: Install System Dependencies
          command: |
            sudo apt-get update
            sudo apt-get install -y libmcrypt-dev libsqlite3-dev libfreetype6-dev libjpeg62-turbo-dev libpng-dev zlib1g-dev

      - run:
          name: Install PHP Extensions
          command: |
            sudo docker-php-ext-configure gd --with-freetype-dir=/usr/include/ --with-jpeg-dir=/usr/include/
            sudo docker-php-ext-install -j$(nproc) iconv mcrypt gd zip pdo_mysql pdo_sqlite
            sudo rm /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini

      - run:
          name: Update Composer
          command: sudo composer self-update

      - checkout

      - restore_cache:
          keys:
            - composer-v1-{{ checksum "composer.lock" }}
            - composer-v1-
      - run:
          name: Install Composer Dependencies
          command: composer install -n --ignore-platform-reqs
      - save_cache:
          key: composer-v1-{{ checksum "composer.lock" }}
          paths:
            - vendor

      - run:
          name: Setup Environment
          command: |
            cp .env.testing .env
            php artisan key:generate
            php artisan passport:keys
            touch ./storage/logs/laravel.log

      - restore_cache:
          keys:
            - node-v1-{{ checksum "package.json" }}
            - node-v1-
      - run:
          name: Install Node Dependencies
          command: |
            node --version
            npm --version
            npm install
      - save_cache:
          key: node-v1-{{ checksum "package.json" }}
          paths:
            - node_modules

      - run:
         name: Run Webpack
         command: npm run prod

      - run:
         name: Migrate Database
         command: php artisan migrate --force

      - run:
          name: PHP CS Fixer
          command: vendor/bin/php-cs-fixer fix --config=.php_cs --diff --dry-run --verbose
      - run:
          name: PHPLOC
          command: |
            mkdir -p ./logs/phploc
            vendor/bin/phploc app --no-interaction --log-xml=logs/phploc/junit.xml
      - run:
          name: PHPCS
          command: |
            mkdir -p ./logs/phpcs
            vendor/bin/phpcs --standard="PSR1,PSR2" -v --report=junit --report-file=logs/phpcs/junit.xml app/
      - run:
          name: PHP Mess Detector
          command: |
            mkdir -p ./logs/phpmd
            vendor/bin/phpmd app text phpmd-ruleset.xml > logs/phpmd/phpmd.log
      - run:
          name: ESLint
          command: |
            mkdir -p ./logs/eslint
            node_modules/eslint/bin/eslint.js --ext .vue -o logs/eslint/junit.xml -f junit resources/assets/js
      - run:
          name: Run Unit Tests
          environment:
            DB_CONNECTION: sqlite-memory
          command: |
            mkdir -p ./logs/phpunit
            vendor/bin/phpunit -d memory_limit=512M --log-junit logs/phpunit/junit.xml --testdox-html logs/phpunit/testdox.html

      - run:
          name: Start Chrome Driver
          command: ./vendor/laravel/dusk/bin/chromedriver-linux
          background: true

      - run:
          name: Run Laravel Server
          command: php artisan serve
          background: true

      - run:
          name: Run Laravel Dusk Tests
          command: php artisan dusk
          environment:
            APP_URL: http://localhost:8000

      - store_artifacts:
          path: ./logs/phploc
          destination: phploc

      - store_artifacts:
          path: ./logs/phpcs
          destination: phpcs

      - store_artifacts:
          path: ./logs/phpmd
          destination: phpmd

      - store_artifacts:
          path: ./logs/eslint
          destination: eslint

      - store_artifacts:
          path: ./logs/phpunit
          destination: phpunit

      - store_artifacts:
          path: ./tests/Browser/console
          destination: console

      - store_artifacts:
          path: ./tests/Browser/screenshots
          destination: screenshots

      - store_artifacts:
          path: ./storage/logs
          destination: laravel

Thanks! this is gold. If anyone else is interested, I'm using the php-cs-fixer rules from Laravel Shift:
https://gist.github.com/laravel-shift/cab527923ed2a109dda047b97d53c200