fix: restrict `secretFile` path

[MichaelDeSteven]

What this PR does:

Which issue(s) this PR fixes:

Fixes #631

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

[codecov[bot]]

Codecov Report

Merging #669 (e8e1103) into main (8aa188f) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #669   +/-   ##
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  Coverage   60.91%   60.91%           
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  Files         120      120           
  Lines        6389     6389           
=======================================
  Hits         3892     3892           
  Misses       2124     2124           
  Partials      373      373           

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[seeflood]

Well done! @ZLBer could u help review this PR?

[seeflood]

I submitted https://github.com/mosn/layotto/pull/698 to test the case ./layotto start -c and ./layotto start --config

@MichaelDeSteven Could u modify the quickstart doc to test the case 2 in https://github.com/mosn/layotto/issues/631

[MichaelDeSteven]

I submitted #698 to test the case ./layotto start -c and ./layotto start --config

@MichaelDeSteven Could u modify the quickstart doc to test the case 2 in #631

I will modify and test it later.

[seeflood]

Hi @MichaelDeSteven , I submitted a PR https://github.com/MichaelDeSteven/layotto/pull/3 to your branch. It will test cases including:

• ./layotto start without -c or --config flags.
• case 2 in https://github.com/mosn/layotto/issues/631

Please review and merge :)

[github-actions[bot]]

This pull request has been automatically marked as stale because it has not had activity in the last 30 days. It will be closed in 7 days if no further activity occurs. Please feel free to give a status update now, ping for review, or re-open when it's ready. Thank you for your contributions!

[github-actions[bot]]

This pull request has been automatically closed because it has not had activity in the last 37 days. Please feel free to give a status update now, ping for review, or re-open when it's ready. Thank you for your contributions!