Add warning about Katacoda shutdown

data/i18n/en/en.toml

@@ -96,6 +96,9 @@ other = "email address"
 [javascript_required]
 other = "JavaScript must be [enabled](https://www.enable-javascript.com/) to view this content"
 
+[katacoda_removal_warning]
+other = """This online tutorial on this page uses functionality that will [not be available](https://www.oreilly.com/online-learning/leveraging-katacoda-technology.html) past <time datetime="2022-06-15">June 15th, 2022</time>."""
+
 [latest_release]
 other = "Latest Release:"
 

layouts/docs/baseof.html

@@ -24,6 +24,11 @@
             {{ if not .Site.Params.ui.breadcrumb_disable }}{{ partial "breadcrumb.html" . }}{{ end }}
             {{ block "deprecated" . }}
               {{ partial "deprecation-warning.html" . }}
+            {{ end }}
+            {{ if .HasShortcode "kat-button" }}
+            {{ block "katacoda-removal" . }}
+              {{ partial "katacoda-removal.html" . }}
+            {{ end }}
             {{ end }}
               {{ block "main" . }}{{ end }}
               {{- if .HasShortcode "thirdparty-content" -}}

layouts/partials/katacoda-removal.html

@@ -0,0 +1,7 @@
+<section id="katacoda-removal-warning">
+  <div class="content warning pageinfo pageinfo-warning">
+    <p>
+      {{ T "katacoda_removal_warning" | markdownify }}
+    </p>
+  </div>
+</section>