fix install cli with proxy

[bxy4543]

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[sweep-ai]

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• Apply: All new business logic should have corresponding unit tests.
• Apply: Refactor large functions to be more modular.
• Apply: Add docstrings to all functions and file headers.

[sealos-ci-robot]

🤖 Generated by lychee action

Summary

Status	Count
🔍 Total	1148
✅ Successful	378
⏳ Timeouts	0
🔀 Redirected	0
👻 Excluded	768
❓ Unknown	0
🚫 Errors	1

Errors per input

Errors in docs/4.0/i18n/zh-Hans/examples/low-code-platform/install-illacloud.md

• [404] https://www.illacloud.com/zh-CN | Failed: Network error: Not Found

Full action output

Full Github Actions output

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (873894f) 65.45% compared to head (8ffa239) 65.45%.
Report is 8 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4465   +/-   ##
=======================================
  Coverage   65.45%   65.45%           
=======================================
  Files           8        8           
  Lines         660      660           
=======================================
  Hits          432      432           
  Misses        180      180           
  Partials       48       48           

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