docs: add live walkthroughs where applicable

This PR adds embedded youtube videos in places where we have done
walkthroughs of this functionality.

Signed-off-by: Spencer Smith <robertspencersmith@gmail.com>

website/content/docs/v0.6/Guides/configuring-pull-through-cache.md

@@ -9,6 +9,12 @@ We spin up local caching pass-through registries to cache images and configure a
 A similar approach might be used to run Talos in production in air-gapped environments.
 It can be also used to verify that all the images are available in local registries.
 
+## Video Walkthrough
+
+To see a live demo of this writeup, see the video below:
+
+<iframe width="560" height="315" src="https://www.youtube.com/embed/PRiQJR9Q33s" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+
 ## Requirements
 
 The follow are requirements for creating the set of caching proxies:

website/content/docs/v0.6/Guides/upgrading-kubernetes.md

@@ -2,13 +2,21 @@
 title: Upgrading Kubernetes
 ---
 
-## Kubernetes
+## Video Walkthrough
+
+To see a live demo of this writeup, see the video below:
+
+<iframe width="560" height="315" src="https://www.youtube.com/embed/sw78qS8vBGc" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+
+## Kubelet Image
 
 In Kubernetes 1.19, the official `hyperkube` image was removed.
 This means that in order to upgrade Kubernetes, Talos users will have to change the `command`, and `image` fields of each control plane component.
 The `kubelet` image will also have to be updated, if you wish to specify the `kubelet` image explicitly.
 The default used by Talos is sufficient in most cases.
 
+## Kubeconfig
+
 In order to edit the control plane, we will need a working `kubectl` config.
 If you don't already have one, you can get one by running:
 

website/content/docs/v0.6/Guides/upgrading-talos.md

@@ -2,6 +2,12 @@
 title: Upgrading Talos
 ---
 
+## Video Walkthrough
+
+To see a live demo of this writeup, see the video below:
+
+<iframe width="560" height="315" src="https://www.youtube.com/embed/sw78qS8vBGc" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+
 ## Talos
 
 In an effort to create more production ready clusters, Talos will now taint control plane nodes as unschedulable.

website/content/docs/v0.7/Guides/configuring-pull-through-cache.md

@@ -9,6 +9,12 @@ We spin up local caching pass-through registries to cache images and configure a
 A similar approach might be used to run Talos in production in air-gapped environments.
 It can be also used to verify that all the images are available in local registries.
 
+## Video Walkthrough
+
+To see a live demo of this writeup, see the video below:
+
+<iframe width="560" height="315" src="https://www.youtube.com/embed/PRiQJR9Q33s" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+
 ## Requirements
 
 The follow are requirements for creating the set of caching proxies:

website/content/docs/v0.7/Guides/upgrading-kubernetes.md

@@ -2,7 +2,13 @@
 title: Upgrading Kubernetes
 ---
 
-## Kubernetes
+## Video Walkthrough
+
+To see a live demo of this writeup, see the video below:
+
+<iframe width="560" height="315" src="https://www.youtube.com/embed/sw78qS8vBGc" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+
+## Kubeconfig
 
 In order to edit the control plane, we will need a working `kubectl` config.
 If you don't already have one, you can get one by running:

website/content/docs/v0.7/Guides/upgrading-talos.md

@@ -5,7 +5,13 @@ title: Upgrading Talos
 Talos upgrades are effected by an API call.
 The `talosctl` CLI utility will facilitate this, or you can use the automatic upgrade features provided by the [talos controller manager](https://github.com/talos-systems/talos-controller-manager).
 
-## talosctl upgrade
+## Video Walkthrough
+
+To see a live demo of this writeup, see the video below:
+
+<iframe width="560" height="315" src="https://www.youtube.com/embed/sw78qS8vBGc" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+
+## `talosctl` Upgrade
 
 To manually upgrade a Talos node, you will specify the node's IP address and the
 installer container image for the version of Talos to which you wish to upgrade.
@@ -23,7 +29,7 @@ There is an option to this command: `--preserve`, which can be used to explicitl
 In most cases, it is correct to just let Talos perform its default action.
 However, if you are running a single-node control-plane, you will want to make sure that `--preserve=true`.
 
-## Talos controller manager
+## Talos Controller Manager
 
 The Talos Controller Manager can coordinate upgrades of your nodes
 automatically.  

website/content/docs/v0.7/Learn More/talosctl.md

@@ -7,6 +7,12 @@ The `talosctl` tool packs a lot of power into a small package.
 It acts as a reference implementation for the Talos API, but it also handles a lot of
 conveniences for the use of Talos and its clusters.
 
+### Video Walkthrough
+
+To see some live examples of talosctl usage, view the following video:
+
+<iframe width="560" height="315" src="https://www.youtube.com/embed/pl0l_K_3Y6o" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+
 ## Client Configuration
 
 Talosctl configuration is located in `$XDG_CONFIG_HOME/talos/config.yaml` if `$XDG_CONFIG_HOME` is defined.