Use selenium standalone service to run tests

.github/workflows/ci.yml

@@ -78,7 +78,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        node-version: [10.x]
+        node-version: [16.x]
 
     steps:
     - uses: actions/checkout@v2

README.md

@@ -46,14 +46,14 @@ Install the deps, start the dev server and open the web browser on `http://local
 # install dependencies
 npm install
 # start dev server
-npm start
+npm run start
 ```
 
 If you want Maputnik to be accessible externally use the [`--host` option](https://webpack.js.org/configuration/dev-server/#devserverhost):
 
 ```bash
 # start externally accessible dev server
-npm start -- --host 0.0.0.0
+npm run start -- --host 0.0.0.0
 ```
 
 The build process will watch for changes to the filesystem, rebuild and autoreload the editor. However note this from the [webpack-dev-server docs](https://webpack.js.org/configuration/dev-server/):
@@ -76,26 +76,18 @@ npm run lint-styles
 
 
 ## Tests
-For testing we use [webdriverio](http://webdriver.io) and [selenium-standalone](https://github.com/vvo/selenium-standalone)
+For testing we use [webdriverio](https://webdriver.io) and [selenium-standalone](https://github.com/webdriverio/selenium-standalone).
 
-[selenium-standalone](https://github.com/vvo/selenium-standalone) starts a server that will launch browsers on your local machine. We use chrome so you **must** have chrome installed on your machine.
+[selenium-standalone](https://github.com/webdriverio/selenium-standalone) starts a server that will launch browsers on your local machine. You need to have Java installed on your machine as well as *chrome* or *firefox*.
 
-Now open a terminal and run the following. This will install the drivers on your local machine
+Now open a terminal and run the following using *chrome*:
 
 ```
-./node_modules/.bin/selenium-standalone install
+npm run test
 ```
-
-Now start the standalone server
-
+or *firefox*:
 ```
-./node_modules/.bin/selenium-standalone start
-```
-
-Then open another terminal and run
-
-```
-npm test
+BROWSER=firefox npm run test
 ```
 
 After some time you should see a browser launch which will be automated by the test runner.

config/wdio.conf.js

@@ -21,7 +21,7 @@ exports.config = {
       browserName: (process.env.BROWSER || 'chrome'),
     }
   ],
-  services: ['selenium-standalone'],
+  services: process.env.DOCKER_HOST ? [] : ['selenium-standalone'],
   logLevel: 'info',
   bail: 0,
   screenshotPath: SCREENSHOT_PATH,