Keep docker binary command due to the issue #416

[chengshiwen]

Brief changes:

• Keep docker binary command due to the issue Use buildkit to build docker images #416
• Remove the redundant DOCKER_BUILDX_VERSION

This closes #416, and closes #1233 (pr)

[codecov]

Codecov Report

Merging #1478 (ab99b4b) into master (580157d) will decrease coverage by 0.13%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1478      +/-   ##
==========================================
- Coverage   53.08%   52.94%   -0.14%     
==========================================
  Files          85       85              
  Lines        8259     8259              
==========================================
- Hits         4384     4373      -11     
- Misses       3344     3353       +9     
- Partials      531      533       +2     

Flag	Coverage Δ
unittests	52.94% <ø> (-0.14%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/builtin/build/build.go	14.47% <ø> (ø)
...aits/traitdefinition/traitdefinition_controller.go	62.79% <0.00%> (-18.61%)	⬇️
...ha2/core/components/componentdefinition/handler.go	72.72% <0.00%> (-9.10%)	⬇️

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[wonderflow]

thanks good job