title: how to deploy multiple virtual machines using custom image?
body: <p>I am using a Azure.
  I created a custom image of Linux virtual machine.
  I have to create multiple virtual machines of a custom image.
  BUT I don't know the way to do.
  In Resource manager portal, 'virtual machine scale out' function is only for OS images (not for custom images).
  I prefer a solution done in the portal though, using Azure CLI or using template is okay to me. </p>