Add Ubuntu 22.04 install guide (#5720)

* Add Ubuntu 22.04 install guide

* Add Ubuntu 22.04 to End-user guarantees

* Add missing information about supported arches in install guide

docs/getting_started.rst

@@ -282,7 +282,7 @@ If you want to do it, follow these steps.
 2. **Install Linux**
 
   Most of the VPS providers have tools for installing Linux automatically. If
-  you're a beginner, we recommend **Ubuntu 20.04 LTS**.
+  you're a beginner, we recommend **Ubuntu 22.04 LTS**.
 
   For Raspberry Pi users, just install `Raspbian
   <https://www.raspberrypi.org/software/>`_ on a micro-SD card.

docs/install_guides/index.rst

@@ -6,7 +6,7 @@ Installing Red
 The list below shows the installation guides available based on the operating system being used.
 
 If you want to host Red on a VPS and are unsure what operating system you should choose,
-we recommend **Ubuntu 20.04 LTS**.
+we recommend **Ubuntu 22.04 LTS**.
 
 .. toctree::
    :maxdepth: 1
@@ -30,4 +30,5 @@ we recommend **Ubuntu 20.04 LTS**.
    rocky-linux-8
    ubuntu-1804
    ubuntu-2004
+   ubuntu-2204
    ubuntu-non-lts

docs/install_guides/ubuntu-2204.rst

@@ -0,0 +1,33 @@
+.. _install-ubuntu-2204:
+
+==================================
+Installing Red on Ubuntu 22.04 LTS
+==================================
+
+.. include:: _includes/supported-arch-x64+aarch64.rst
+
+.. include:: _includes/linux-preamble.rst
+
+-------------------------------
+Installing the pre-requirements
+-------------------------------
+
+We recommend adding the ``deadsnakes`` ppa to install Python 3.9:
+
+.. prompt:: bash
+
+    sudo apt update
+    sudo apt -y install software-properties-common
+    sudo add-apt-repository -y ppa:deadsnakes/ppa
+
+Now install the pre-requirements with apt:
+
+.. prompt:: bash
+
+    sudo apt -y install python3.9 python3.9-dev python3.9-venv python3-pip git openjdk-11-jre-headless build-essential nano
+
+.. Include common instructions:
+
+.. include:: _includes/create-env-with-venv.rst
+
+.. include:: _includes/install-and-setup-red-unix.rst

docs/version_guarantees.rst

@@ -76,6 +76,7 @@ Rocky Linux 8                      x86-64, aarch64           2029-05-31 (`end-of
 Ubuntu 18.04 LTS                   x86-64, aarch64           2023-04-30 (`End of Standard Support <https://wiki.ubuntu.com/Releases#Current>`__)
 Ubuntu 20.04 LTS                   x86-64, aarch64           2025-04-30 (`End of Standard Support <https://wiki.ubuntu.com/Releases#Current>`__)
 Ubuntu 21.10                       x86-64, aarch64           2022-07-31 (`End of Standard Support <https://wiki.ubuntu.com/Releases#Current>`__)
+Ubuntu 22.04 LTS                   x86-64, aarch64           2027-04-30 (`End of Standard Support <https://wiki.ubuntu.com/Releases#Current>`__)
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