Deploying Az Function app inline using ARM Template?

I am trying to deploy a function app running on a Windows plan and written on PowerShell. Although, I have found a way to deploy this app via ARM templates, I don't see a way through which my dependencies can be installed automatically through the same template. I tried to modify the requirements.psd1 via deployment scripts but that is a complex approach. I was wondering if there is any other way to let Azure know of my app's dependencies via an ARM Template?