fix: 修复 Docker Test 无法正常运行的问题

[he0119]

将 PLUGINS_URL 通过环境变量传递进去。

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.76%. Comparing base (99304cb) to head (be6a25e).
Report is 1 commits behind head on main.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #261      +/-   ##
==========================================
+ Coverage   92.38%   92.76%   +0.37%     
==========================================
  Files          35       35              
  Lines        1786     1782       -4     
==========================================
+ Hits         1650     1653       +3     
+ Misses        136      129       -7     

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