Command Provided are showing error in Azure CLI

[ghost]

Command:
Install-VstsAgentWindowsServerCoreContainer.ps1 -VSTSAccountName "xxx" -PATToken "xxx"

Error showing in the Azure CLI:
Install-VstsAgentWindowsServerCoreContainer.ps1: The term 'Install-VstsAgentWindowsServerCoreContainer.ps1' is not recognized as a name of a cmdlet,function, script file, or executable program.
Check the spelling of the name, or if a path was included, verify that the path is correct and try again.

Can you provide the tutorial how to set up this ACI agent?