Support use /dev/stdin as SOURCE path for image build

[zyfjeff]

Relevant Issue (if applicable)

If there are Issues related to this PullRequest, please list it.

Details

Support use /dev/stdin as SOURCE path for image build

Types of changes

What types of changes does your PullRequest introduce? Put an x in all the boxes that apply:

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation Update (if none of the other choices apply)

Checklist

Go over all the following points, and put an x in all the boxes that apply.

• I have updated the documentation accordingly.
• I have added tests to cover my changes.

[anolis-bot]

@zyfjeff , a new test job has been submitted. Please wait in patience. The test job url: https://tone.openanolis.cn/ws/nrh4nnio/test_result/90705

[codecov]

Codecov Report

Merging #1409 (89165de) into master (1abf0ae) will decrease coverage by 0.17%.
The diff coverage is 71.42%.

@@            Coverage Diff             @@
##           master    #1409      +/-   ##
==========================================
- Coverage   46.45%   46.28%   -0.17%     
==========================================
  Files         123      123              
  Lines       38602    38607       +5     
  Branches    38602    38607       +5     
==========================================
- Hits        17931    17871      -60     
- Misses      19702    19765      +63     
- Partials      969      971       +2     

Files Changed	Coverage Δ
src/bin/nydus-image/main.rs	41.58% <71.42%> (+0.59%)	⬆️

... and 7 files with indirect coverage changes