Support to set the targert directory

[LinuxSuRen]

No description provided.

[codecov]

Codecov Report

Merging #243 (f25b856) into master (aa3f42f) will decrease coverage by 0.10%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #243      +/-   ##
==========================================
- Coverage   26.71%   26.60%   -0.11%     
==========================================
  Files          27       27              
  Lines        1782     1789       +7     
==========================================
  Hits          476      476              
- Misses       1281     1288       +7     
  Partials       25       25              

Flag	Coverage Δ
unittests	26.60% <0.00%> (-0.11%)	⬇️

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Impacted Files	Coverage Δ
cmd/install.go	20.25% <0.00%> (-0.64%)	⬇️
pkg/installer/process.go	0.00% <0.00%> (ø)

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