Login and Pull docker image. (#2179)

Azure/azure-sdk-for-js#18405

Docs is switching the validation using docker container. Here is the common logic to pull image from Azure container register.

Testing pipeline in use with the script:
https://dev.azure.com/azure-sdk/internal/_build/results?buildId=1172146&view=logs&j=dc056dfc-c0cf-5958-c8c4-8da4f91a3739&t=bfb6cede-7671-5504-0a11-79b13ef63703

eng/common/pipelines/templates/steps/docker-pull-image.yml

@@ -0,0 +1,15 @@
+parameters: 
+  - name: ContainerRegistryClientId
+    type: string
+  - name: ContainerRegistryClientSecret
+    type: string
+  - name: ImageId
+    type: string
+steps:
+- pwsh: |
+    $containerRegistry = ("${{parameters.ImageId}}" -split "\/")[0]
+    docker login $containerRegistry -u "${{ parameters.ContainerRegistryClientId }}" -p "${{ parameters.ContainerRegistryClientSecret }}"
+  displayName: Login container registry
+- pwsh: |
+    docker pull '${{ parameters.ImageId}}'
+  displayName: Pull docker image ${{ parameters.ImageId }}

eng/common/scripts/Update-DocsMsPackages.ps1

@@ -24,13 +24,20 @@ docs generation from pacakges which are not published to the default feed). This
 variable is meant to be used in the domain-specific business logic in
 &$UpdateDocsMsPackagesFn
 
+.PARAMETER ImageId
+Optional The docker image for package validation in format of '$containerRegistry/$imageName:$tag'. 
+e.g. azuresdkimages.azurecr.io/jsrefautocr:latest
+
 #>
 param (
   [Parameter(Mandatory = $true)]
   [string] $DocRepoLocation, # the location of the cloned doc repo
 
   [Parameter(Mandatory = $false)]
-  [string] $PackageSourceOverride
+  [string] $PackageSourceOverride,
+
+  [Parameter(Mandatory = $false)]
+  [string] $ImageId
 )
 
 . (Join-Path $PSScriptRoot common.ps1)