chore: fix make generate error

[JashBook]

ref https://github.com/apecloud/kbcli/actions/runs/19555254655/job/55996138682
fix

make generate
Makefile:350: docker/docker.mk: No such file or directory
make: *** No rule to make target 'docker/docker.mk'.  Stop.
Error: Process completed with exit code 2.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 40.96%. Comparing base (e39a3d4) to head (6cbc32b).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #644   +/-   ##
=======================================
  Coverage   40.96%   40.96%           
=======================================
  Files         184      184           
  Lines       24652    24652           
=======================================
  Hits        10098    10098           
  Misses      13406    13406           
  Partials     1148     1148           

Flag	Coverage Δ
unittests	40.96% <ø> (ø)

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