...
Download the zip file from the nexus repository(PlatformInsightsAzureWebhook.zip) to your local system.
Follow the steps to upload zip file into the container:
Click on functionapp container to go inside container.
Click on upload button.
Select the zip file from the local system.
Select checkbox Overwrite if files already exist.
Click on advanced and change the Blob type to Block Blob and Block size to 100 MB.
Click on Upload button.
...
You need to manually set apim-InsightsWebhook in the function app.
Copy the value of apim-InsightsWebhook from the Outputs.
Go to Function App page from left menu or visit link https://portal.azure.com/#blade/HubsExtension/BrowseResource/resourceType/Microsoft.Web%2Fsites/kind/functionapp
Click on function app named InsightsWebhookApp.
...