[Premium] Azure Function on a VNET can't start because of no access to zip using WEBSITE_RUN_FROM_PACKAGE

**Describe the bug**
When on a premium plan, and on a VNET, where the azure function is deployed using WEBSITE_RUN_FROM_PACKAGE. The Azure function cannot start. It has no access to the zip configured in WEBSITE_RUN_FROM_PACKAGE.

We have tried whitelisting the IP addresses of the azure function. But this does not work.

When we create a separate storage account which is not on a vnet. Only to make the zip available. Then configure WEBSITE_RUN_FROM_PACKAGE to get the zip from this location. Then the azure function is able to download the zip and runs fine.

**To Reproduce**
Steps to reproduce the behavior:
Run an azure function on a premium plan, use a vnet and deploy the azure function using WEBSITE_RUN_FROM_PACKAGE.

**Expected behavior**
The azure function should be able to download the zip.

**Additional context**
We are going to try to deploy using an alternative. Like with a Docker container.
If there are other alternatives to deploy the azure function. please let us know.