Update tag in docs and files [skip ci]

.github/ISSUE_TEMPLATE.md

@@ -41,7 +41,7 @@ Issues without a reproduction script are likely to stall and eventually be close
 ## Environment
 
 OS: <!-- Windows 10? OSX? -->
-Docker-Selenium image version: <!-- 3, 3.141, 4.0.0-alpha-7-prerelease-20200907 etc
+Docker-Selenium image version: <!-- 3, 3.141, 4.0.0-alpha-7-prerelease-20200921 etc
 Also provide the docker image id 
 -->
 Docker version: 

.github/ISSUE_TEMPLATE/bug.md

@@ -41,7 +41,7 @@ Issues without a reproduction script are likely to stall and eventually be close
 ## Environment
 
 OS: <!-- Windows 10? OSX? -->
-Docker-Selenium image version: <!-- 3, 3.141, 4.0.0-alpha-7-prerelease-20200907 etc
+Docker-Selenium image version: <!-- 3, 3.141, 4.0.0-alpha-7-prerelease-20200921 etc
 Also provide the docker image id 
 -->
 Docker version: 

.github/ISSUE_TEMPLATE/regression.md

@@ -47,7 +47,7 @@ Issues without a reproduction script are likely to stall and eventually be close
 ## Environment
 
 OS: <!-- Windows 10? OSX? -->
-Docker-Selenium image version: <!-- 3, 3.141, 4.0.0-alpha-7-prerelease-20200907 etc
+Docker-Selenium image version: <!-- 3, 3.141, 4.0.0-alpha-7-prerelease-20200921 etc
 Also provide the docker image id 
 -->
 Docker version: 

Distributor/Dockerfile

@@ -2,7 +2,7 @@
 # NOTE: DO *NOT* EDIT THIS FILE.  IT IS GENERATED.
 # PLEASE UPDATE Dockerfile.txt INSTEAD OF THIS FILE
 # !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-FROM selenium/base:4.0.0-alpha-7-prerelease-20200907
+FROM selenium/base:4.0.0-alpha-7-prerelease-20200921
 LABEL authors=SeleniumHQ
 
 USER 1200

EventBus/Dockerfile

@@ -2,7 +2,7 @@
 # NOTE: DO *NOT* EDIT THIS FILE.  IT IS GENERATED.
 # PLEASE UPDATE Dockerfile.txt INSTEAD OF THIS FILE
 # !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-FROM selenium/base:4.0.0-alpha-7-prerelease-20200907
+FROM selenium/base:4.0.0-alpha-7-prerelease-20200921
 LABEL authors=SeleniumHQ
 
 USER 1200

Hub/Dockerfile

@@ -2,7 +2,7 @@
 # NOTE: DO *NOT* EDIT THIS FILE.  IT IS GENERATED.
 # PLEASE UPDATE Dockerfile.txt INSTEAD OF THIS FILE
 # !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-FROM selenium/base:4.0.0-alpha-7-prerelease-20200907
+FROM selenium/base:4.0.0-alpha-7-prerelease-20200921
 LABEL authors=SeleniumHQ
 
 USER 1200

NodeBase/Dockerfile

@@ -2,7 +2,7 @@
 # NOTE: DO *NOT* EDIT THIS FILE.  IT IS GENERATED.
 # PLEASE UPDATE Dockerfile.txt INSTEAD OF THIS FILE
 # !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-FROM selenium/base:4.0.0-alpha-7-prerelease-20200907
+FROM selenium/base:4.0.0-alpha-7-prerelease-20200921
 LABEL authors=SeleniumHQ
 
 USER root
@@ -124,10 +124,14 @@ RUN sudo chmod -R 777 ${HOME} \
 #==============================
 # Scripts to run fluxbox and x11vnc
 #==============================
-COPY start-fluxbox.sh \
-      start-vnc.sh \
+COPY start-vnc.sh \
       /opt/bin/
 
+#==============================
+# Selenium Grid logo as wallpaper for Fluxbox
+#==============================
+COPY selenium_grid_logo.png /usr/share/images/fluxbox/ubuntu-light.png
+
 #============================
 # Some configuration options
 #============================
@@ -136,6 +140,7 @@ ENV SCREEN_HEIGHT 1020
 ENV SCREEN_DEPTH 24
 ENV SCREEN_DPI 96
 ENV DISPLAY :99.0
+ENV DISPLAY_NUM 99
 ENV START_XVFB true
 
 #========================

NodeChrome/Dockerfile

@@ -2,7 +2,7 @@
 # NOTE: DO *NOT* EDIT THIS FILE.  IT IS GENERATED.
 # PLEASE UPDATE Dockerfile.txt INSTEAD OF THIS FILE
 # !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-FROM selenium/node-base:4.0.0-alpha-7-prerelease-20200907
+FROM selenium/node-base:4.0.0-alpha-7-prerelease-20200921
 LABEL authors=SeleniumHQ
 
 USER root

NodeFirefox/Dockerfile

@@ -2,7 +2,7 @@
 # NOTE: DO *NOT* EDIT THIS FILE.  IT IS GENERATED.
 # PLEASE UPDATE Dockerfile.txt INSTEAD OF THIS FILE
 # !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-FROM selenium/node-base:4.0.0-alpha-7-prerelease-20200907
+FROM selenium/node-base:4.0.0-alpha-7-prerelease-20200921
 LABEL authors=SeleniumHQ
 
 USER root

NodeOpera/Dockerfile

@@ -2,7 +2,7 @@
 # NOTE: DO *NOT* EDIT THIS FILE.  IT IS GENERATED.
 # PLEASE UPDATE Dockerfile.txt INSTEAD OF THIS FILE
 # !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-FROM selenium/node-base:4.0.0-alpha-7-prerelease-20200907
+FROM selenium/node-base:4.0.0-alpha-7-prerelease-20200921
 LABEL authors=SeleniumHQ
 
 USER root

README.md

@@ -11,7 +11,7 @@ We are doing prereleases on a regular basis to get early feedback. This means th
 can be currently at a different alpha version (e.g. bindings on Alpha 6, and these Docker images on prerelease Alpha 7).
 
 Docker images for Grid 4 come with a handful of tags to simplify its usage, have a look at them in one of 
-our [prereleases](https://github.com/SeleniumHQ/docker-selenium/releases/tag/4.0.0-alpha-7-prerelease-20200907)
+our [prereleases](https://github.com/SeleniumHQ/docker-selenium/releases/tag/4.0.0-alpha-7-prerelease-20200921)
 
 To get notifications of new prereleases, add yourself as a watcher of "Releases only". 
 
@@ -31,9 +31,9 @@ https://www.selenium.dev/support/
 1. Start a Docker container with Firefox
 
 ``` bash
-$ docker run -d -p 4444:4444 --shm-size 2g selenium/standalone-firefox:4.0.0-alpha-7-prerelease-20200907
+$ docker run -d -p 4444:4444 --shm-size 2g selenium/standalone-firefox:4.0.0-alpha-7-prerelease-20200921
 # OR
-$ docker run -d -p 4444:4444 -v /dev/shm:/dev/shm selenium/standalone-firefox:4.0.0-alpha-7-prerelease-20200907
+$ docker run -d -p 4444:4444 -v /dev/shm:/dev/shm selenium/standalone-firefox:4.0.0-alpha-7-prerelease-20200921
 ```
 
 2. Point your WebDriver tests to http://localhost:4444/wd/hub
@@ -60,17 +60,17 @@ ___
 
 ![Firefox](https://raw.githubusercontent.com/alrra/browser-logos/main/src/firefox/firefox_24x24.png) Firefox 
 ``` bash
-$ docker run -d -p 4444:4444 -v /dev/shm:/dev/shm selenium/standalone-firefox:4.0.0-alpha-7-prerelease-20200907
+$ docker run -d -p 4444:4444 -v /dev/shm:/dev/shm selenium/standalone-firefox:4.0.0-alpha-7-prerelease-20200921
 ```
 
 ![Chrome](https://raw.githubusercontent.com/alrra/browser-logos/main/src/chrome/chrome_24x24.png) Chrome 
 ``` bash
-$ docker run -d -p 4444:4444 -v /dev/shm:/dev/shm selenium/standalone-chrome:4.0.0-alpha-7-prerelease-20200907
+$ docker run -d -p 4444:4444 -v /dev/shm:/dev/shm selenium/standalone-chrome:4.0.0-alpha-7-prerelease-20200921
 ```
 
 ![Opera](https://raw.githubusercontent.com/alrra/browser-logos/main/src/opera/opera_24x24.png) Opera 
 ``` bash
-$ docker run -d -p 4444:4444 -v /dev/shm:/dev/shm selenium/standalone-opera:4.0.0-alpha-7-prerelease-20200907
+$ docker run -d -p 4444:4444 -v /dev/shm:/dev/shm selenium/standalone-opera:4.0.0-alpha-7-prerelease-20200921
 ```
 
 _Note: Only one Standalone container can run on port_ `4444` _at the same time._
@@ -87,10 +87,10 @@ A Docker [network](https://docs.docker.com/engine/reference/commandline/network_
 
 ``` bash
 $ docker network create grid
-$ docker run -d -p 4442-4444:4442-4444 --net grid --name selenium-hub selenium/hub:4.0.0-alpha-7-prerelease-20200907
-$ docker run -d --net grid -e SE_EVENT_BUS_HOST=selenium-hub -e SE_EVENT_BUS_PUBLISH_PORT=4442 -e SE_EVENT_BUS_SUBSCRIBE_PORT=4443 -v /dev/shm:/dev/shm selenium/node-chrome:4.0.0-alpha-7-prerelease-20200907
-$ docker run -d --net grid -e SE_EVENT_BUS_HOST=selenium-hub -e SE_EVENT_BUS_PUBLISH_PORT=4442 -e SE_EVENT_BUS_SUBSCRIBE_PORT=4443 -v /dev/shm:/dev/shm selenium/node-firefox:4.0.0-alpha-7-prerelease-20200907
-$ docker run -d --net grid -e SE_EVENT_BUS_HOST=selenium-hub -e SE_EVENT_BUS_PUBLISH_PORT=4442 -e SE_EVENT_BUS_SUBSCRIBE_PORT=4443 -v /dev/shm:/dev/shm selenium/node-opera:4.0.0-alpha-7-prerelease-20200907
+$ docker run -d -p 4442-4444:4442-4444 --net grid --name selenium-hub selenium/hub:4.0.0-alpha-7-prerelease-20200921
+$ docker run -d --net grid -e SE_EVENT_BUS_HOST=selenium-hub -e SE_EVENT_BUS_PUBLISH_PORT=4442 -e SE_EVENT_BUS_SUBSCRIBE_PORT=4443 -v /dev/shm:/dev/shm selenium/node-chrome:4.0.0-alpha-7-prerelease-20200921
+$ docker run -d --net grid -e SE_EVENT_BUS_HOST=selenium-hub -e SE_EVENT_BUS_PUBLISH_PORT=4442 -e SE_EVENT_BUS_SUBSCRIBE_PORT=4443 -v /dev/shm:/dev/shm selenium/node-firefox:4.0.0-alpha-7-prerelease-20200921
+$ docker run -d --net grid -e SE_EVENT_BUS_HOST=selenium-hub -e SE_EVENT_BUS_PUBLISH_PORT=4442 -e SE_EVENT_BUS_SUBSCRIBE_PORT=4443 -v /dev/shm:/dev/shm selenium/node-opera:4.0.0-alpha-7-prerelease-20200921
 ```
 
 When you are done using the Grid and the containers have exited, the network can be removed with the following command:
@@ -156,8 +156,8 @@ This example shows how to start the containers manually:
 
 ``` bash
 $ docker network create grid
-$ docker run -d -p 4444:4444 -p 6900:5900 --net grid --name selenium -v /dev/shm:/dev/shm selenium/standalone-chrome:4.0.0-alpha-7-20200907
-$ docker run -d --net grid --name video -v /tmp/videos:/videos selenium/video:ffmpeg-4.3.1-20200907
+$ docker run -d -p 4444:4444 -p 6900:5900 --net grid --name selenium -v /dev/shm:/dev/shm selenium/standalone-chrome:4.0.0-alpha-7-20200921
+$ docker run -d --net grid --name video -v /tmp/videos:/videos selenium/video:ffmpeg-4.3.1-20200921
 # Run your tests
 $ docker stop video && docker rm video
 $ docker stop selenium && docker rm selenium
@@ -184,15 +184,15 @@ ___
 You can pass `SE_OPTS` variable with additional commandline parameters for starting a hub or a node.
 
 ``` bash
-$ docker run -d -p 4444:4444 -e SE_OPTS="-debug" --name selenium-hub selenium/hub:4.0.0-alpha-7-prerelease-20200907
+$ docker run -d -p 4444:4444 -e SE_OPTS="-debug" --name selenium-hub selenium/hub:4.0.0-alpha-7-prerelease-20200921
 ```
 
 ### JAVA_OPTS Java Environment Options
 
 You can pass `JAVA_OPTS` environment variable to java process.
 
 ``` bash
-$ docker run -d -p 4444:4444 -e JAVA_OPTS=-Xmx512m --name selenium-hub selenium/hub:4.0.0-alpha-7-prerelease-20200907
+$ docker run -d -p 4444:4444 -e JAVA_OPTS=-Xmx512m --name selenium-hub selenium/hub:4.0.0-alpha-7-prerelease-20200921
 ```
 
 ### Node configuration options
@@ -208,7 +208,7 @@ variables.
 Here is an example with the default values of these environment variables:
 
 ```bash
-$ docker run -d --e SE_EVENT_BUS_HOST=<event_bus_ip|event_bus_name> -e SE_EVENT_BUS_PUBLISH_PORT=4442 -e SE_EVENT_BUS_SUBSCRIBE_PORT=4443 -v /dev/shm:/dev/shm selenium/node-chrome:4.0.0-alpha-7-prerelease-20200907
+$ docker run -d --e SE_EVENT_BUS_HOST=<event_bus_ip|event_bus_name> -e SE_EVENT_BUS_PUBLISH_PORT=4442 -e SE_EVENT_BUS_SUBSCRIBE_PORT=4443 -v /dev/shm:/dev/shm selenium/node-chrome:4.0.0-alpha-7-prerelease-20200921
 ```
 
 ### Setting Screen Resolution
@@ -263,11 +263,11 @@ current one._
 
 ``` bash
 $ docker network create grid
-$ docker run -d -p 4442-4444:4442-4444 --net grid --name selenium-hub selenium/hub:4.0.0-alpha-7-prerelease-20200907
+$ docker run -d -p 4442-4444:4442-4444 --net grid --name selenium-hub selenium/hub:4.0.0-alpha-7-prerelease-20200921
 $ docker run -d --net grid -e SE_EVENT_BUS_HOST=selenium-hub \
     -e SE_EVENT_BUS_PUBLISH_PORT=4442 -e SE_EVENT_BUS_SUBSCRIBE_PORT=4443 \
     -v /dev/shm:/dev/shm \
-    -v /e2e/uploads:/e2e/uploads selenium/node-firefox:4.0.0-alpha-7-prerelease-20200907
+    -v /e2e/uploads:/e2e/uploads selenium/node-firefox:4.0.0-alpha-7-prerelease-20200921
 ```
 
 _Note:_ `-v /e2e/uploads:/e2e/uploads` _is optional in case you are testing browser uploads on your 
@@ -348,10 +348,10 @@ $ docker network create grid
 $ docker run -d -p 4444:4444 --net grid --name selenium-hub \
     --health-cmd='/opt/bin/check-grid.sh --host 0.0.0.0 --port 4444' \
     --health-interval=15s --health-timeout=30s --health-retries=5 \
-    selenium/hub:4.0.0-alpha-7-prerelease-20200907
-$ docker run -d --net grid -e HUB_HOST=selenium-hub -v /dev/shm:/dev/shm selenium/node-chrome:4.0.0-alpha-7-prerelease-20200907
-$ docker run -d --net grid -e HUB_HOST=selenium-hub -v /dev/shm:/dev/shm selenium/node-firefox:4.0.0-alpha-7-prerelease-20200907
-$ docker run -d --net grid -e HUB_HOST=selenium-hub -v /dev/shm:/dev/shm selenium/node-opera:4.0.0-alpha-7-prerelease-20200907
+    selenium/hub:4.0.0-alpha-7-prerelease-20200921
+$ docker run -d --net grid -e HUB_HOST=selenium-hub -v /dev/shm:/dev/shm selenium/node-chrome:4.0.0-alpha-7-prerelease-20200921
+$ docker run -d --net grid -e HUB_HOST=selenium-hub -v /dev/shm:/dev/shm selenium/node-firefox:4.0.0-alpha-7-prerelease-20200921
+$ docker run -d --net grid -e HUB_HOST=selenium-hub -v /dev/shm:/dev/shm selenium/node-opera:4.0.0-alpha-7-prerelease-20200921
 ```
 **Note:** The `\` line delimiter won't work on Windows based terminals, try either `^` or a backtick.
 
@@ -415,9 +415,9 @@ running inside the container.
 
 Here is an example with the standalone images, the same concept applies to the node images.
 ``` bash
-$ docker run -d -p 4444:4444 -p 5900:5900 -v /dev/shm:/dev/shm selenium/standalone-chrome:4.0.0-alpha-7-prerelease-20200907
-$ docker run -d -p 4445:4444 -p 5901:5900 -v /dev/shm:/dev/shm selenium/standalone-firefox:4.0.0-alpha-7-prerelease-20200907
-$ docker run -d -p 4446:4444 -p 5902:5900 -v /dev/shm:/dev/shm selenium/standalone-opera:4.0.0-alpha-7-prerelease-20200907
+$ docker run -d -p 4444:4444 -p 5900:5900 -v /dev/shm:/dev/shm selenium/standalone-chrome:4.0.0-alpha-7-prerelease-20200921
+$ docker run -d -p 4445:4444 -p 5901:5900 -v /dev/shm:/dev/shm selenium/standalone-firefox:4.0.0-alpha-7-prerelease-20200921
+$ docker run -d -p 4446:4444 -p 5902:5900 -v /dev/shm:/dev/shm selenium/standalone-opera:4.0.0-alpha-7-prerelease-20200921
 ```
 
 Then, you would use in your VNC client:
@@ -435,9 +435,9 @@ When you are prompted for the password it is `secret`. If you wish to change thi
 it in the `/NodeBase/Dockerfile` and build the images yourself, or you can define a Docker image that derives from 
 the posted ones which reconfigures it:
 ``` dockerfile
-#FROM selenium/node-chrome:4.0.0-alpha-7-prerelease-20200907
-#FROM selenium/node-firefox:4.0.0-alpha-7-prerelease-20200907
-#FROM selenium/node-opera:4.0.0-alpha-7-prerelease-20200907
+#FROM selenium/node-chrome:4.0.0-alpha-7-prerelease-20200921
+#FROM selenium/node-firefox:4.0.0-alpha-7-prerelease-20200921
+#FROM selenium/node-opera:4.0.0-alpha-7-prerelease-20200921
 #Choose the FROM statement that works for you.
 
 RUN x11vnc -storepasswd <your-password-here> /home/seluser/.vnc/passwd

Router/Dockerfile

@@ -2,7 +2,7 @@
 # NOTE: DO *NOT* EDIT THIS FILE.  IT IS GENERATED.
 # PLEASE UPDATE Dockerfile.txt INSTEAD OF THIS FILE
 # !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-FROM selenium/base:4.0.0-alpha-7-prerelease-20200907
+FROM selenium/base:4.0.0-alpha-7-prerelease-20200921
 LABEL authors=SeleniumHQ
 
 USER 1200

Sessions/Dockerfile

@@ -2,7 +2,7 @@
 # NOTE: DO *NOT* EDIT THIS FILE.  IT IS GENERATED.
 # PLEASE UPDATE Dockerfile.txt INSTEAD OF THIS FILE
 # !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-FROM selenium/base:4.0.0-alpha-7-prerelease-20200907
+FROM selenium/base:4.0.0-alpha-7-prerelease-20200921
 LABEL authors=SeleniumHQ
 
 USER 1200

StandaloneChrome/Dockerfile

@@ -2,7 +2,7 @@
 # NOTE: DO *NOT* EDIT THIS FILE.  IT IS GENERATED.
 # PLEASE UPDATE Dockerfile.txt INSTEAD OF THIS FILE
 # !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-FROM selenium/node-chrome:4.0.0-alpha-7-prerelease-20200907
+FROM selenium/node-chrome:4.0.0-alpha-7-prerelease-20200921
 LABEL authors=SeleniumHQ
 
 USER 1200

StandaloneFirefox/Dockerfile

@@ -2,7 +2,7 @@
 # NOTE: DO *NOT* EDIT THIS FILE.  IT IS GENERATED.
 # PLEASE UPDATE Dockerfile.txt INSTEAD OF THIS FILE
 # !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-FROM selenium/node-firefox:4.0.0-alpha-7-prerelease-20200907
+FROM selenium/node-firefox:4.0.0-alpha-7-prerelease-20200921
 LABEL authors=SeleniumHQ
 
 USER 1200

StandaloneOpera/Dockerfile

@@ -2,7 +2,7 @@
 # NOTE: DO *NOT* EDIT THIS FILE.  IT IS GENERATED.
 # PLEASE UPDATE Dockerfile.txt INSTEAD OF THIS FILE
 # !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-FROM selenium/node-opera:4.0.0-alpha-7-prerelease-20200907
+FROM selenium/node-opera:4.0.0-alpha-7-prerelease-20200921
 LABEL authors=SeleniumHQ
 
 USER 1200

docker-compose-v2.yml

@@ -4,7 +4,7 @@
 version: '2'
 services:
   chrome:
-    image: selenium/node-chrome:4.0.0-alpha-7-prerelease-20200907
+    image: selenium/node-chrome:4.0.0-alpha-7-prerelease-20200921
     volumes:
       - /dev/shm:/dev/shm
     depends_on:
@@ -17,7 +17,7 @@ services:
       - "6900:5900"
 
   firefox:
-    image: selenium/node-firefox:4.0.0-alpha-7-prerelease-20200907
+    image: selenium/node-firefox:4.0.0-alpha-7-prerelease-20200921
     volumes:
       - /dev/shm:/dev/shm
     depends_on:
@@ -30,7 +30,7 @@ services:
       - "6901:5900"
 
   opera:
-    image: selenium/node-opera:4.0.0-alpha-7-prerelease-20200907
+    image: selenium/node-opera:4.0.0-alpha-7-prerelease-20200921
     volumes:
       - /dev/shm:/dev/shm
     depends_on:
@@ -43,7 +43,7 @@ services:
       - "6902:5900"
 
   selenium-hub:
-    image: selenium/hub:4.0.0-alpha-7-prerelease-20200907
+    image: selenium/hub:4.0.0-alpha-7-prerelease-20200921
     ports:
       - "4442:4442"
       - "4443:4443"