browser container configuration updates

- Pined selenium image to an older version See docksal/docksal#1096 (comment)
- Mount /dev/shm from host  to avoid the browser crashing inside a docker container
- Use debug image version for VNC access out of the box

Author: Leonid Makarov

.docksal/docksal.env

@@ -2,6 +2,3 @@
 # To override a variable locally:
 # - create .docksal/docksal-local.env file and local variable overrides there
 # - add .docksal/docksal-local.env to .gitignore
-
-# Docksal configuration
-VIRTUAL_HOST=qa-suite.docksal

.docksal/docksal.yml

@@ -23,8 +23,19 @@ services:
   browser:
     hostname: browser
     # Pick/uncomment one
-    image: selenium/standalone-chrome
-    #image: selenium/standalone-firefox
+    # Pin selenium image to an older version
+    # See https://github.com/docksal/docksal/issues/1096#issuecomment-543316840
+    image: selenium/standalone-chrome-debug:3.141.59
+    #image: selenium/standalone-firefox-debug:3.141.59
+    volumes:
+      # Workaround to avoid the browser crashing inside a docker container
+      # See https://github.com/SeleniumHQ/docker-selenium#quick-start
+      - /dev/shm:/dev/shm
+    # VNC port for debugging
+    # Host: <your-docker-host>:5900 (e.g, localhost:5900, 192.168.64.100:5900)
+    # Password: secret
+    ports:
+      - 5900:5900
 
   # Web (reports)
   web: