chore: .dockerignore add .gocache & .gomodcache

[iutx]

What this PR does / why we need it:

.dockerignore add .gocache & .gomodcache

Which issue(s) this PR fixes:

• Fixes #your-issue_number
• [Erda Cloud Issue Link](paste your link here)

Specified Reviewers:

/assign @sfwn

ChangeLog

Language	Changelog
🇺🇸 English	.dockerignore add .gocache & .gomodcache
🇨🇳 中文	.dockerignore 增加 gocache 相关

Need cherry-pick to release versions?

Add comment like /cherry-pick release/1.0 when this PR is merged.

For details on the cherry pick process, see the cherry pick requests section under CONTRIBUTING.md.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 14.82%. Comparing base (71b86e9) to head (0bb12e0).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #6656   +/-   ##
=======================================
  Coverage   14.82%   14.82%           
=======================================
  Files        3897     3897           
  Lines      321886   321886           
=======================================
  Hits        47728    47728           
  Misses     268688   268688           
  Partials     5470     5470           

Flag	Coverage Δ
by-github-actions	14.82% <ø> (ø)

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[sfwn]

/approve