Reorganising README

[skip ci]

Author: diemol

README.md

@@ -1,40 +1,22 @@
-# Docker images for the Selenium Grid Server
-
-The project is made possible by volunteer contributors who have put in thousands of hours of their own time, 
-and made the source code freely available under the [Apache License 2.0](LICENSE.md).
-
 ![Build & test](https://github.com/SeleniumHQ/docker-selenium/workflows/Build%20&%20test/badge.svg?branch=trunk)
 ![Deployments](https://github.com/SeleniumHQ/docker-selenium/workflows/Deploys/badge.svg)
 
-## Images published to Docker Hub registry
-
-These images are published to the Docker Hub registry at [Selenium Docker Hub](https://hub.docker.com/u/selenium).
-
-## Experimental Mult-Arch aarch64/armhf/amd64 Images
-
-For experimental docker container images, which run on platforms such as the Mac M1 or Raspberry Pi, see the community repository hosted at [seleniumhq-community/docker-seleniarm](https://github.com/seleniumhq-community/docker-seleniarm).  These images are built for three separate architectures:  linux/arm64 (aarch64), linux/arm/v7 (armhf), and linux/amd64. 
-
-Furthermore, these experimental container images are published on [Seleniarm Docker Hub](https://hub.docker.com/u/seleniarm) registry.
-
-See [Issue #1076](https://github.com/SeleniumHQ/docker-selenium/issues/1076) for more information on these images.
-
-If you're working on an Intel or AMD64 architecture, we recommend using the container images in _this_ repository (SeleniumHQ/docker-selenium) instead of the experimental ones.
+# Docker images for the Selenium Grid Server
 
-# Selenium Grid 4
+The project is made possible by volunteer contributors who have put in thousands of hours of their own time, 
+and made the source code freely available under the [Apache License 2.0](LICENSE.md).
 
-Docker images for Grid 4 come with a handful of tags to simplify its usage, have a look at them in one of 
-our [releases](https://github.com/SeleniumHQ/docker-selenium/releases/tag/4.1.2-20220217)
+These Docker images come with a handful of tags to simplify its usage, have a look at them in one of 
+our [releases](https://github.com/SeleniumHQ/docker-selenium/releases/tag/4.1.2-20220217).
 
 To get notifications of new releases, add yourself as a "Releases only" watcher. 
 
-Looking for Grid 3? Head to the [Selenium 3 branch](https://github.com/SeleniumHQ/docker-selenium/tree/selenium-3). 
-This branch will be kept for a while but won't receive any updates anymore.
+These images are published to the Docker Hub registry at [Selenium Docker Hub](https://hub.docker.com/u/selenium).
 
 ## Community
 
 Do you need help to use these Docker images?
-All the contact points for the different Selenium projects can be seen at:
-https://www.selenium.dev/support/
+Talk to us at https://www.selenium.dev/support/
 
 ## Quick start
 
@@ -50,8 +32,6 @@ docker run -d -p 4444:4444 -p 7900:7900 --shm-size="2g" selenium/standalone-fire
 
 4. (Optional) To see what is happening inside the container, head to http://localhost:7900 (password is `secret`).
 
-*Grid 3 used `/wd/hub`, while it should also work, it is no longer required*
-
 More details about visualising the container activity, check the [Debugging](#debugging) section.
 
 :point_up: When executing `docker run` for an image that contains a browser please use 
@@ -62,6 +42,24 @@ See [Tagging Conventions](https://github.com/SeleniumHQ/docker-selenium/wiki/Tag
 
 ___
 
+## Experimental Mult-Arch aarch64/armhf/amd64 Images
+
+For experimental docker container images, which run on platforms such as the Mac M1 or Raspberry Pi, 
+see the community driven repository hosted at 
+[seleniumhq-community/docker-seleniarm](https://github.com/seleniumhq-community/docker-seleniarm).
+These images are built for three separate architectures: linux/arm64 (aarch64), linux/arm/v7 (armhf), 
+and linux/amd64. 
+
+Furthermore, these experimental container images are published on 
+[Seleniarm Docker Hub](https://hub.docker.com/u/seleniarm) registry.
+
+See issue [#1076](https://github.com/SeleniumHQ/docker-selenium/issues/1076) for more information on these images.
+
+If you're working on an Intel or AMD64 architecture, we recommend using the container images 
+in _this_ repository (SeleniumHQ/docker-selenium) instead of the experimental ones.
+
+___
+
 ## Execution modes
 
 ### Standalone