Hello @mondolq ,
Thanks for reaching out.
As mentioned in the Prerequisites section of the document you referenced above, you need to execute the following Azure CLI command first:
az ad sp create-for-rbac --name <service-principal-name>
This would create a Service Principal and return a response as shown under:
The appId, password and tenant correspond to AZURE_APP_ID, AZURE_PASSWORD and AZURE_TENANT_ID, respectively.
And yes, ZIP_FILE is the path of the package you want to deploy.
Hope this helps. Please let me know if there are further questions.