Add script to create a container manifest (#6735)

Add script to create a container manifest

docker/createManifest.ps1

@@ -0,0 +1,39 @@
+# Used to create a container manifest.
+# Prereq: you must login to $ContainerRegistery before running this script
+# default scenarios is to build a `latest` tag which will point to the `ubuntu-16.04` tag for linux
+# and the `windowsservercore` tag for windows
+param(
+    [parameter(Mandatory)]
+    [string]
+    $ContainerRegistry,
+
+    [ValidateNotNullOrEmpty()]
+    [ValidatePattern('^[abcdefghijklmnopqrstuvwxyz-]+$')]
+    [string]
+    $ManifestTag = 'latest',
+
+    [ValidateNotNullOrEmpty()]
+    [ValidatePattern('^[abcdefghijklmnopqrstuvwxyz-]+$')]
+    [string]
+    $Image = 'powershell',
+
+    [ValidateNotNullOrEmpty()]
+    [ValidatePattern('^[abcdefghijklmnopqrstuvwxyz-]+$')]
+    [string[]]
+    $TagList = ('ubuntu-16.04', 'windowsservercore')
+)
+
+$manifestList = @()
+foreach($tag in $TagList)
+{
+    $manifestList += "$ContainerRegistry/${Image}:$tag"
+}
+
+# Create the manifest
+docker manifest create $ContainerRegistry/${Image}:$ManifestTag $manifestList
+
+# Inspect (print) the manifest
+docker manifest inspect $ContainerRegistry/${Image}:$ManifestTag
+
+# push the manifest
+docker manifest push $ContainerRegistry/${Image}:$ManifestTag