Fix htmltest errors for new pages

.htmltest.yml

@@ -18,3 +18,5 @@ CacheExpires: "12h" # Default is 2 weeks.
 IgnoreURLs:
   - https://cse.google.com/cse.js
   - https://marketplace.visualstudio.com
+  - https://github.com/eclipse/che-docs/edit/master/
+  - https://www.eclipse.org/che/docs/che-7/

modules/end-user-guide/nav.adoc

@@ -35,6 +35,7 @@
 **** xref:provisioning-jetbrains-activation-code-for-offline-use.adoc[]
 *** xref:support-for-theia-based-ides.adoc[]
 ** xref:adding-tools-to-che-after-creating-a-workspace.adoc[]
+** xref:using-private-container-registries.adoc[]
 * xref:using-artifact-repositories-in-a-restricted-environment.adoc[]
 ** xref:using-maven-artifact-repositories.adoc[]
 ** xref:using-gradle-artifact-repositories.adoc[]

modules/end-user-guide/pages/using-private-container-registries.adoc

@@ -0,0 +1,7 @@
+[id="using-private-container-registries"]
+// = Using private container registries
+:navtitle: Using private container registries
+:keywords: end-user-guide, using-private-container-registries
+:page-aliases: .:using-private-container-registries
+
+include::partial$proc_using-private-container-registries.adoc[]

modules/end-user-guide/partials/assembly_customizing-developer-environments.adoc

@@ -25,5 +25,6 @@ A user can extend {prod-short} by using `self-hosted` mode, which {prod-short} p
 * xref:what-is-a-che-theia-plug-in.adoc[]
 * xref:using-alternative-ides-in-che.adoc[]
 * xref:adding-a-vs-code-extension-to-a-workspace.adoc[]
+* xref:using-private-container-registries.adoc[]
 
 :context: {parent-context-of-customizing-developer-environments}

modules/end-user-guide/partials/proc_using-private-container-registries.adoc

@@ -0,0 +1,40 @@
+[id="proc_using-private-container-registries_{context}"]
+= Using private container registries
+
+[role="_abstract"]
+This section describes the necessary steps to use container images from private container registries.
+
+.Prerequisites
+
+* A running instance of {prod}. To install an instance of {prod}, see xref:installation-guide:installing-che.adoc[].
+
+.Procedure
+
+. Navigate to the {prod-short} Dashboard. See xref:navigating-che-using-the-dashboard.adoc[].
+
+. Navigate to *User Preferences*.
+
+.. Click on your username in the top right corner.
+
+.. Click the btn:[User Preferences] tab.
+
+. Click the btn:[Add Container Registry] button in btn:[Container Registries] tab and execute following actions:
+
+** Enter the container registry domain name in the *Registry* field.
+
+** Optionally, enter the username of your account at this registry in the *Username* field.
+
+** Enter the password in the *Password* field to authenticate in the container registry.
+
+. Click the btn:[Add] button.
+
+
+.Verification
+
+. See that there is a new entry in the btn:[Container Registries] tab.
+
+. Create a workspace that uses a container image from the specified container registry. See xref:configuring-a-workspace-using-a-devfile.adoc[].
+
+.Additional resources
+
+* link:https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/[Kubernetes documentation: Pull an Image from a Private Registry]