document that the containerd package is required for Amazon Linux 2023 and Ubuntu 24.04 (#1097)

* document that the containerd package is required for Amazon Linux 2023 and Ubuntu 24.04

* add container-selinux

* document how we will install older versions if newer ones are not available

Author: laverya

src/markdown-pages/add-ons/containerd.md

@@ -25,13 +25,39 @@ The following host packages are required for Red Hat Enterprise Linux 9 and Rock
 - libseccomp
 - libzstd
 - systemd
+- container-selinux
+
+The following host packages are required for Amazon Linux 2023 and Ubuntu 24.04:
+
+- bash
+- libseccomp2
+- libzstd1
+- systemd
+- container-selinux
+- containerd
+
+The `containerd` package does not need to match the version of the containerd add-on.
+
+## Maximum Containerd Versions
+
+Not every version of Containerd is available for every OS.
+If your kURL spec requests a newer version of Containerd than can be installed for your current operating system, the latest version will be installed instead.
+
+| Operating System | Latest Version |
+|------------------|----------------|
+| RHEL 7           | 1.6.33         |
+| CentOS 7         | 1.6.33         |
+| Oracle Linux 7   | 1.6.33         |
+| Ubuntu 18.04     | 1.6.21         |
+
+For instance, if you attempt to install Containerd `1.7.25` on a RHEL 7 system, kURL will instead install Containerd `1.6.33`.
 
 ## Advanced Install Options
 
 ```yaml
 spec:
   containerd:
-    version: 1.4.6
+    version: 1.7.x
     preserveConfig: false
     tomlConfig: |
       [debug]

src/markdown-pages/install-with-kurl/system-requirements.md

@@ -32,7 +32,7 @@ title: "System Requirements"
 
 ## Host Package Requirements
 
-Host packages are bundled and installed by kURL without the need for external package repositories except for in the case of Red Hat Enterprise Linux 9 and Rocky Linux 9.
+Host packages are bundled and installed by kURL without the need for external package repositories except for in the case of Red Hat Enterprise Linux 9, Rocky Linux 9, Amazon Linux 2023, and Ubuntu 24.04.
 
 For these OSes, the following packages are required per add-on:
 
@@ -47,6 +47,11 @@ For these OSes, the following packages are required per add-on:
 | Rook                             | lvm2 |
 | Velero                           | nfs-utils |
 
+Additionally, the `containerd` package is required for Containerd add-on installations on Amazon Linux 2023 and Ubuntu 24.04.
+
+In general, the latest versions of the packages listed above are recommended for installation.
+For instance, you do not need to match the version of the containerd package to the version of the containerd add-on.
+
 ## Disk Space Requirements
 
 ### Per Node Disk Space