Publish DSC Config Source: https://msdn.microsoft.com/en-us/library/azure/dn877980.aspx

Publish-DSCConfig2.ps1

#File: C:\examples\IISInstall.ps1
configuration IISInstall 
{ 
    node ("localhost") 
    { 
        WindowsFeature IIS 
        { 
            Ensure = "Present" 
            Name = "Web-Server"                       
        } 
    } 
} 

#=====================================================


Publish-AzureVMDscConfiguration -ConfigurationPath C:\examples\IISInstall.ps1        


#=====================================================

$vm = Set-AzureVMDSCExtension -VM $vm -ConfigurationArchive "IISInstall.ps1.zip" -ConfigurationName "IISInstall"

Publish-DSCConfig3.ps1

configuration Main 
{ 
    param( 
        [Parameter(Mandatory=$true)] 
        [ValidateNotNullorEmpty()] 
        [PSCredential]
        $Credential 
    ) 
    
    Node localhost {
        
        User LocalUserAccount
        {
            Username = $Credential.UserName
            Password = $Credential
            Disabled = $false
            Ensure = "Present"
            FullName = "Local User Account"
            Description = "Account for running Local Service"
            PasswordNeverExpires = $true
        }

    }
   
}  


$configurationName = "Main" 
$configurationArguments = @{ Credential = Get-Credential }
$configurationArchive = "user_configuration.ps1.zip"

$vm = Set-AzureVMDSCExtension `
    -VM $vm `
    -ConfigurationArchive $configurationArchive `
    -ConfigurationName $configurationName `
    -ConfigurationArgument $configurationArguments