Update Selenium Grid for docker development

Commit e37b29b8fc updated the selenium driver and webdriver from v3 to v4, but failed to address local docker
development. This commit updatesthe docker selenium setup, and pins the docker images to a specific version, something
that wasn't done before.

docker-compose.yml

@@ -170,7 +170,7 @@ services:
 
   # https://vitobotta.com/2019/09/04/rails-parallel-system-tests-selenium-docker/
   selenium-hub:
-    image: selenium/hub:latest
+    image: selenium/hub:4.0
     container_name: selenium-hub
     hostname: selenium-hub
     environment:
@@ -182,10 +182,10 @@ services:
     networks:
       - testing
     ports:
-      - "4444:4444"
+      - "4442-4444:4442-4444"
 
   chrome:
-    image: selenium/node-chrome-debug:latest
+    image: selenium/node-chrome:4.0
     volumes:
       - /dev/shm:/dev/shm
       - "downloads-test:/home/seluser/Downloads"
@@ -193,9 +193,11 @@ services:
       - testing
     ports:
       - "5900-5915:5900"
+    shm_size: 2g
     environment:
-      HUB_HOST: selenium-hub
-      HUB_PORT: 4444
+      SE_EVENT_BUS_HOST: selenium-hub
+      SE_EVENT_BUS_PUBLISH_PORT: 4442
+      SE_EVENT_BUS_SUBSCRIBE_PORT: 4443
       SCREEN_WIDTH: 1920
       SCREEN_HEIGHT: 1080
       # in case we want multiple sessions per container
@@ -203,7 +205,7 @@ services:
       NODE_MAX_SESSION: "${CI_JOBS:-4}"
 
   firefox:
-    image: selenium/node-firefox-debug:latest
+    image: selenium/node-firefox:4.0
     volumes:
       - /dev/shm:/dev/shm
       - "downloads-test:/home/seluser/Downloads"
@@ -211,9 +213,11 @@ services:
       - testing
     ports:
       - "5916-5931:5900"
+    shm_size: 2g
     environment:
-      HUB_HOST: selenium-hub
-      HUB_PORT: 4444
+      SE_EVENT_BUS_HOST: selenium-hub
+      SE_EVENT_BUS_PUBLISH_PORT: 4442
+      SE_EVENT_BUS_SUBSCRIBE_PORT: 4443
       SCREEN_WIDTH: 1920
       SCREEN_HEIGHT: 1080
       # in case we want multiple sessions per container
@@ -221,7 +225,7 @@ services:
       NODE_MAX_SESSION: "${CI_JOBS:-4}"
 
   opera:
-    image: selenium/node-opera-debug:latest
+    image: selenium/node-opera:4.0
     volumes:
       - /dev/shm:/dev/shm
       - "downloads-test:/home/seluser/Downloads"
@@ -230,8 +234,9 @@ services:
     ports:
       - "5932-5957:5900"
     environment:
-      HUB_HOST: selenium-hub
-      HUB_PORT: 4444
+      SE_EVENT_BUS_HOST: selenium-hub
+      SE_EVENT_BUS_PUBLISH_PORT: 4442
+      SE_EVENT_BUS_SUBSCRIBE_PORT: 4443
       SCREEN_WIDTH: 1920
       SCREEN_HEIGHT: 1080
       # in case we want multiple sessions per container