Nightwatch.json

{
  "src_folders" : ["tests"],
  "output_folder" : "tests/reports",
  "custom_commands_path" : "",
  "custom_assertions_path" : "",
  "page_objects_path" : "",
  "globals_path" : "",

  "selenium" : {
    "start_process" : true,
    "server_path" : "./node_modules/selenium-server-standalone-jar/jar/selenium-server-standalone-3.3.1.jar",
    "log_path" : "tests/log",
    "port" : 4444,
    "cli_args" : {
      "webdriver.chrome.driver" : "./node_modules/.bin/chromedriver",
      "webdriver.gecko.driver" : "./node_modules/.bin/geckodriver",
      "webdriver.edge.driver" : ""
    }
  },
  "test_settings" : {

    "default" : {
      "launch_url" : "http://local.phpwebapp.dev",
      "selenium_port"  : 4444,
      "selenium_host"  : "localhost",
      "silent": true,
      "screenshots" : {
        "enabled" : false,
        "path" : ""
      },
      "desiredCapabilities": {
        "browserName": "chrome",
        "marionette": true
      }
    },

    "circleci" : {
      "output_folder" : "${CIRCLE_TEST_REPORTS}",
      "launch_url" : "http://local.phpwebapp.dev",
      "selenium_host" : "localhost",
      "selenium_port" : 4444,
      "screenshots" : {
        "enabled" : false,
        "path" : ""
      },
      "desiredCapabilities" : {
        "browserName" : "chrome",
        "marionette": true
      }
    },

    "chrome" : {
      "desiredCapabilities": {
        "browserName": "chrome"
      }
    },

    "firefox" : {
      "desiredCapabilities": {
        "browserName": "firefox"
      }
    }
  }
}