Update docker-compose file (#70)

* Shared Android identification key in docker-compose file

* Updated version of docker-selenium hub

* Added comment how to enable appium-docker-android for mobile website testing

Author: budtmo

docker-compose.yml

@@ -6,19 +6,22 @@ version: '2'
 services:
   # Selenium hub
   selenium_hub:
-    image: selenium/hub:3.4.0
+    image: selenium/hub:3.7.1
     ports:
       - 4444:4444
 
-  # Appium Docker Android
-  appium_devices:
+  # Appium Docker Android  
+  appium_android_device:
     image: appium/appium
     depends_on:
       - selenium_hub
     network_mode: "service:selenium_hub"
     privileged: true
     volumes:
       - /dev/bus/usb:/dev/bus/usb
+      - ~/.android:/root/.android
     environment:
       - CONNECT_TO_GRID=True
       - SELENIUM_HOST=selenium_hub
+      # Enable it for msite testing
+      #- BROWSER_NAME=chrome