Override head partial to stop indexing old site versions

Signed-off-by: Marc Duiker <marcduiker@users.noreply.github.com>

daprdocs/config.toml

@@ -167,6 +167,7 @@ version_menu = "v1.8"
 version = "v1.8"
 archived_version = true
 url_latest_version = "https://docs.dapr.io"
+allow_search_indexing = false
 
 [[params.versions]]
   version = "v1.10 (preview)"

daprdocs/layouts/partials/head.html

@@ -0,0 +1,54 @@
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+{{ hugo.Generator }}
+{{ range .AlternativeOutputFormats -}}
+<link rel="{{ .Rel }}" type="{{ .MediaType.Type }}" href="{{ .Permalink | safeURL }}">
+{{ end -}}
+
+{{ $outputFormat := partial "outputformat.html" . -}}
+{{ if and hugo.IsProduction (.Site.Params.allow_search_indexing) (ne $outputFormat "print") -}}
+<meta name="robots" content="index, follow">
+{{ else -}}
+<meta name="robots" content="noindex, nofollow">
+{{ end -}}
+
+{{ partialCached "favicons.html" . }}
+<title>
+  {{- if .IsHome -}}
+    {{ .Site.Title -}}
+  {{ else -}}
+    {{ with .Title }}{{ . }} | {{ end -}}
+    {{ .Site.Title -}}
+  {{ end -}}
+</title>
+{{ $desc := .Page.Description | default (.Page.Content | safeHTML | truncate 150) -}}
+<meta name="description" content="{{ $desc }}">
+{{ template "_internal/opengraph.html" . -}}
+{{ template "_internal/schema.html" . -}}
+{{ template "_internal/twitter_cards.html" . -}}
+{{ partialCached "head-css.html" . "asdf" -}}
+<script
+  src="https://code.jquery.com/jquery-3.5.1.min.js"
+  integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0="
+  crossorigin="anonymous"></script>
+{{ if .Site.Params.offlineSearch -}}
+<script
+  src="https://unpkg.com/lunr@2.3.8/lunr.min.js"
+  integrity="sha384-vRQ9bDyE0Wnu+lMfm57BlYLO0/XauFuKpVsZPs7KEDwYKktWi5+Kz3MP8++DFlRY"
+  crossorigin="anonymous"></script>
+{{ end -}}
+
+{{ if .Site.Params.prism_syntax_highlighting -}}
+<link rel="stylesheet" href="{{ "/css/prism.css" | relURL }}"/>
+{{ end -}}
+
+{{ partial "hooks/head-end.html" . -}}
+
+{{/* To comply with GDPR, cookie consent scripts places in head-end must execute before Google Analytics is enabled */ -}}
+{{ if hugo.IsProduction -}}
+  {{ if hasPrefix .Site.GoogleAnalytics "G-" -}}
+    {{ template "_internal/google_analytics.html" . -}}
+  {{ else -}}
+    {{ template "_internal/google_analytics_async.html" . -}}
+  {{ end -}}
+{{ end -}}