Ready announcements for Docsy

Serve the JavaScript code using Hugo Pipes, and avoid customizing the
'head.html' partial. Part of some work to allow using vanilla Docsy
(if we wanted to).

layouts/partials/head.html

@@ -33,7 +33,6 @@
 <script src="https://unpkg.com/lunr@2.1.6/lunr.js"></script>
 <script src="/js/offline-search.js"></script>
 {{end}}
-{{ partial "hooks/head-end.html" . }}
 
 <!-- Docsy head.html ends here -->
 
@@ -78,11 +77,11 @@
 <!--script src="https://unpkg.com/split.js/dist/split.min.js"></script-->
 <script src="/js/split-1.6.0.js" intregrity="sha384-0blL3GqHy6+9fw0cyY2Aoiwg4onHAtslAs4OkqZY7UQBrR65/K4gI+hxLdWDrjpz"></script>
 
-<!--Script for dismissing banners/notices-->
-<script defer src="{{ "js/dismiss_banner.js" | relURL }}"></script>
-
 {{- if eq (lower .Params.cid) "community" -}}
 <script defer src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>
 {{- end -}}
 {{ with .Params.js }}{{ range (split . ",") }}<script src="{{ (trim . " ") | relURL }}"></script><!-- custom js added -->
 {{ end }}{{ else }}<!-- no custom js detected -->{{ end }}
+
+{{/* make sure that head-end hook comes last */}}
+{{ partial "hooks/head-end.html" . }}

layouts/partials/hooks/head-end.html

@@ -52,3 +52,12 @@
 <script defer src="{{ $releaseBinariesJs.RelPermalink }}"></script>
   {{- end -}}
 {{- end -}}
+
+{{/* JavaScript for announcements */}}
+{{- if hugo.IsProduction -}}
+  {{- $bannerDismissJs :=  resources.Get "js/dismiss_banner.js" | minify | fingerprint -}}
+<script defer src="{{ $bannerDismissJs.RelPermalink }}" integrity="{{ $bannerDismissJs.Data.Integrity }}" crossorigin="anonymous"></script>
+{{- else -}}
+  {{- $bannerDismissJs := resources.Get "js/dismiss_banner.js" -}}
+<script defer src="{{ $bannerDismissJs.RelPermalink }}"></script>
+{{- end -}}