Flyte enables production-grade orchestration for machine learning workflows and data processing created to accelerate local workflows to production.

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<https://github.com/flyteorg/flytekit/pull/1691|#1691  Support configuring pip index url with the image spec>
Pull request opened by <https://github.com/yini7777|yini7777>
*Type: Bug Fix*
*Complete description*

Currently, we are unable to specify the pip index URL during package installation, although it is supported by envd.  
The purpose of this PR is to enable configuring the custom pip index url.

*Tracking Issue*
<https://github.com/flyteorg/flytekit|flyteorg/flytekit>
DCO: DCO
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<https://github.com/flyteorg/flytekit/pull/1691|#1691  Support configuring pip index url with the image spec>
Pull request closed by <https://github.com/yini7777|yini7777>
<https://github.com/flyteorg/flytekit|flyteorg/flytekit>