Fix shellcheck warnings in hack/build.sh script

[xiangpingjiang]

Description

Changes

• build.sh script

Reference

Fixes #1859

Release Note

Fix shellcheck warnings in `hack/build.sh` script

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (00f3529) 79.62% compared to head (e897eb4) 79.62%.

❗ Current head e897eb4 differs from pull request most recent head e74af95. Consider uploading reports for the commit e74af95 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1860   +/-   ##
=======================================
  Coverage   79.62%   79.62%           
=======================================
  Files         179      179           
  Lines       13927    13927           
=======================================
  Hits        11090    11090           
  Misses       2070     2070           
  Partials      767      767           

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[knative-prow]

Hi @xiangpingjiang. Thanks for your PR.

I'm waiting for a knative member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[dsimansk]

/ok-to-test

[xiangpingjiang]

/retest

[dsimansk]

Adding hold for @rhuss to have a look as well. Otherwise it looks good to me. Thanks for accommodating the review feedback promptly!

/lgtm
/hold

[rhuss]

Some minor comments, otherwise looks good to me. Thanks @xiangpingjiang !

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: xiangpingjiang / name: cola (e74af95)

[xiangpingjiang]

/retest

[xiangpingjiang]

@rhuss , Thanks for your reviews, I corrected your comments, could you review my latest code ?

[rhuss]

Thanks! Looks good to me, thanks a lot for patience :-)

/approve
/lgtm

[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dsimansk, rhuss, xiangpingjiang

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• OWNERS [dsimansk,rhuss]

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[rhuss]

/unhold