Add virtual folder to Azure Web App - powershell

Question

I want to automate my deployment to Azure Web App.
I am using Octopus Deploy to deploy my app to a Azure Web App into a sub-folder based on my git-branch.
This works.
The problem is, that I need to add that folder to the list of virtual directories in the Application Settings of the Web App and I also have to mark it as an application.
How can I do this?
I can use anything that is possible with PowerShell.
P.S. I found this old thread: https://social.msdn.microsoft.com/Forums/azure/en-US/990f41fd-f8b6-43a0-b942-cef0308120b2/add-virtual-application-and-directory-to-an-azure-website-using-powershell?forum=windowsazurewebsitespreview, but this no longer seems to be working.

Answer 1

I'd recommend looking into the Azure Resource Manager - https://resources.azure.com - if you drill down to an existing Web App you can view REST & PowerShell commands for managing resources. In the Web App JSON, you'll find a section for Virtual Applications:
"virtualApplications": [
{
"virtualPath": "/",
"physicalPath": "site\\wwwroot",
"preloadEnabled": true,
"virtualDirectories": null
}
],
Since you are using Azure PowerShell, after Get-AzureSubscription, you should be able to do something like:
# PowerShell equivalent script
Switch-AzureMode -Name AzureResourceManager
# GET web
Get-AzureResource -ResourceGroupName yourResourceGroup -ResourceType Microsoft.Web/sites/config -ResourceName yourWebApp/web -OutputObjectFormat New -ApiVersion 2015-08-01
# SET web
$PropertiesObject = #{
#Property = value;
}
Set-AzureResource -PropertyObject $PropertiesObject -ResourceGroupName yourResourceGroup -ResourceType Microsoft.Web/sites/config -ResourceName yourWebApp/web -OutputObjectFormat New -ApiVersion 2015-08-01 -Force