Add linux/arm64 support to build tooling

[ryan-lane]

Ⅰ. Describe what this PR does

This change adds arm64 support to relevant docker images, which was missing for a number of images, making them impossible to install on arm servers.

Ⅱ. Does this pull request fix one issue?

I didn't open a specific issue, but there is a related open issue.

Fixes #269

Ⅲ. Describe how to verify it

Use the builder, changed in this PR, to make the various image builds.

Ⅳ. Special notes for reviews

Note that this change also changes some copy paths in the docker images, as they were failing BuildKit’s static checker, as they were out-of-context copies.

[kruise-bot]

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[kruise-bot]

Welcome @ryan-lane! It looks like this is your first PR to openkruise/agents 🎉

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.71%. Comparing base (e2ffc5a) to head (3fa6046).
⚠️ Report is 8 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #598   +/-   ##
=======================================
  Coverage   79.71%   79.71%           
=======================================
  Files         205      205           
  Lines       15287    15287           
=======================================
  Hits        12186    12186           
  Misses       2658     2658           
  Partials      443      443           

Flag	Coverage Δ
unittests	79.71% <ø> (ø)

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[googs1025]

already in #545

[kruise-bot]

@ryan-lane: PR needs rebase.

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[ryan-lane]

@googs1025 ah, I'll close in favor of that. Is there any progress there? I need arm64 images