docs: url parameter for workspace image (rhdevdocs-5255)

modules/end-user-guide/nav.adoc

@@ -16,6 +16,7 @@
 *** xref:url-parameter-for-the-devfile-file-path.adoc[]
 *** xref:url-parameter-for-the-workspace-storage.adoc[]
 *** xref:url-parameter-for-additional-remotes.adoc[]
+*** xref:url-parameter-for-container-image.adoc[]
 ** xref:basic-actions-you-can-perform-on-a-workspace.adoc[]
 ** xref:authenticating-to-a-git-server-from-a-workspace.adoc[]
 * xref:customizing-workspace-components.adoc[]

modules/end-user-guide/pages/optional-parameters-for-the-urls-for-starting-a-new-workspace.adoc

@@ -16,3 +16,4 @@ When you start a new workspace, {prod-short} configures the workspace according
 * xref:url-parameter-for-the-devfile-file-path.adoc[]
 * xref:url-parameter-for-the-workspace-storage.adoc[]
 * xref:url-parameter-for-additional-remotes.adoc[]
+* xref:url-parameter-for-container-image.adoc[]

modules/end-user-guide/pages/url-parameter-for-container-image.adoc

@@ -0,0 +1,21 @@
+:_content-type: CONCEPT
+:description: URL parameter for a container image
+:keywords: parameter, URL, container, image
+:navtitle: URL parameter for a container image
+//:page-aliases:
+
+[id="url-parameter-for-container-image"]
+= URL parameter for a container image
+
+You can use the `image` parameter to add a path to a container image in the following scenarios:
+
+* The Git repository contains no devfile, and you want to start a new workspace with this container.
+
+* The Git repository contains a devfile, and you want this container image to run instead of the first `container` `image` listed in the `components` section of the devfile.
+
+The URL parameter for the path to a container image is `image=`:
+
+[subs="+quotes"]
+----
+https://<che_fqdn>#<git_repository_url>?image=<container_image_url>
+----