create user env

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 87.50000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 65.07%. Comparing base (637480f) to head (8c6712b). Report is 7 commits behind head on main.

Files with missing lines	Patch %	Lines
src/jupyterhub_config/custom_spawner.py	87.50%	3 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #81 +/- ## ========================================== + Coverage 62.36% 65.07% +2.70% ========================================== Files 5 5 Lines 186 209 +23 ========================================== + Hits 116 136 +20 - Misses 70 73 +3 ```

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