fix: build error with npm not exist & tiny improve

[imbajin]

Purpose of the PR

• subtask of fix(hubble): build with node and yarn #543
• enhance fix: github action build hubble image failed #557

Main Changes

Verifying these changes

• Trivial rework / code cleanup without any test coverage. (No Need)
• Already covered by existing tests, such as (please modify tests here).
• Need tests and can be verified as follows:
  • xxx

Does this PR potentially affect the following parts?

• Nope
• Dependencies (add/update license info)
• Modify configurations
• The public API
• Other affects (typed here)

Documentation Status

• Doc - TODO
• Doc - Done
• Doc - No Need