Display image digest for container packages (#21170)

fixes #21160

options/locale/locale_en-US.ini

@@ -3092,6 +3092,7 @@ container.details.platform = Platform
 container.details.repository_site = Repository Site
 container.details.documentation_site = Documentation Site
 container.pull = Pull the image from the command line:
+container.digest = Digest:
 container.documentation = For more information on the Container registry, see <a target="_blank" rel="noopener noreferrer" href="https://docs.gitea.io/en-us/packages/container/">the documentation</a>.
 container.multi_arch = OS / Arch
 container.layers = Image Layers

templates/package/content/container.tmpl

@@ -14,6 +14,10 @@
 					<div class="markup"><pre class="code-block"><code>docker pull {{.RegistryHost}}/{{.PackageDescriptor.Owner.LowerName}}/{{.PackageDescriptor.Package.LowerName}}{{$separator}}{{.PackageDescriptor.Version.LowerVersion}}</code></pre></div>
 				{{end}}
 			</div>
+			<div class="field">
+				<label>{{svg "octicon-code"}} {{.locale.Tr "packages.container.digest"}}</label>
+				<div class="markup"><pre class="code-block"><code>{{range .PackageDescriptor.Files}}{{if eq .File.LowerName "manifest.json"}}{{.Properties.GetByName "container.digest"}}{{end}}{{end}}</code></pre></div>
+			</div>
 			<div class="field">
 				<label>{{.locale.Tr "packages.container.documentation" | Safe}}</label>
 			</div>