build_index.py: index_name hardcoded in python file, .env AZUREAI_SEARCH_INDEX_NAME is ignored

[bmerkle]

Please provide us with the following information:

This issue is for a: (mark with an x)

- [x] bug report -> please search issues before submitting
- [ ] feature request
- [ ] documentation issue or request
- [ ] regression (a behavior that used to work and stopped in a new release)

Minimal steps to reproduce

in build_index.py the index name is hardcoded to "tutorial-index". However the index can also be specified via the .env file.
IMO the .env file should be read and only if there is no value, we should set a default value (to e.g. "tutorial-index)

hard coded value:

rag-data-openai-python-promptflow/tutorial/build_index.py

Line 44 in 7e8e6b0

index_name = "tutorial-index" # your desired index name

env specified value:

rag-data-openai-python-promptflow/tutorial/sample.env

Line 12 in 7e8e6b0

AZURE_OPENAI_EVALUATION_DEPLOYMENT=

Any log messages given by the failure

Expected/desired behavior

index name should be read from value specified in the .env file

OS and Version?

Windows 7, 8 or 10. Linux (which distribution). macOS (Yosemite? El Capitan? Sierra?)

Versions

Mention any other details that might be useful

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[bmerkle]

Additionally i think the documentation has to be fixed.
Setting the index-name in the .env file has to be done before running the build-index.py program

https://learn.microsoft.com/en-us/azure/ai-studio/tutorials/copilot-sdk-build-rag?tabs=azure-portal#set-the-search-index-environment-variable