Update layouts for Katacoda removal

Author: Tim Bannister

data/i18n/en/en.toml

@@ -211,17 +211,16 @@ other = "JavaScript must be [enabled](https://www.enable-javascript.com/) to vie
 
 [katacoda_message]
 other = """<h4>Shutdown of interactive tutorials</h4>
-<p>The interactive tutorials on this website are being shut down. The Kubernetes
-project hopes to reinstate a similar interactive learning option in the long
-term.</p>
-<p>The shutdown follows O'Reilly Media's 2019 <a
-href="https://www.oreilly.com/content/oreilly-acquires-katacoda-and-a-new-way-for-2-5m-customers-to-learn/">acquisition</a>
-of Katacoda.</p>
+<p>The interactive tutorials previously on this website have been shut down.</p>
 <p>Kubernetes is grateful to O'Reilly and Katacoda for many years of helping
 people take their first steps in learning Kubernetes.</p>
-<p>The tutorials will cease to function after the <b>31<sup>st</sup> of March,
-2023</b>. For more information, see "<a href="/blog/2023/02/14/kubernetes-katacoda-tutorials-stop-from-2023-03-31/">Free Katacoda Kubernetes Tutorials Are Shutting
-Down</a>."</p>"""
+<p>The shutdown followed O'Reilly Media's 2019
+<a href="https://www.oreilly.com/content/oreilly-acquires-katacoda-and-a-new-way-for-2-5m-customers-to-learn/">acquisition</a>
+of Katacoda.</p>
+<hr />
+<p>The tutorials ceased to function after the <b>31<sup>st</sup> of March,
+2023</b>. You are seeing this notice because this particular page has not yet been updated
+following that shutdown.</p>"""
 
 [latest_release]
 other = "Latest Release:"

layouts/docs/single.html

@@ -1,5 +1,10 @@
 {{ define "main" }}
     <div class="td-content">
+    {{- if .HasShortcode "kat-button" -}}
+    <div class="pageinfo pageinfo-secondary">
+    {{ T "katacoda_message" | safeHTML }}
+    </div>
+    {{- end -}}
     {{ partial "docs/content-page" (dict "ctx" . "page" .) }}
     <!-- Partial "docs/api-reference-links" determines API reference links for 'partial/page-meta-links.html' -->
     {{ partial "docs/api-reference-links" . }}

layouts/shortcodes/kat-button

@@ -0,0 +1,2 @@
+{{/* placeholder */}}
+{{/* See https://k8s.io/blog/2023/02/14/kubernetes-katacoda-tutorials-stop-from-2023-03-31/ */}}

layouts/shortcodes/kat-button.html

@@ -1 +1,2 @@
-<script defer src="https://katacoda.com/embed.js"></script>
+{{/* placeholder */}}
+{{/* See https://k8s.io/blog/2023/02/14/kubernetes-katacoda-tutorials-stop-from-2023-03-31/ */}}