Narrow down target files by exact match of INPUT_FILES

[massongit]

In entrypoint.sh, target files are narrowed down by partial match of INPUT_FILES.
So if INPUT_FILES includes test/test.txt, test/test.txt and test/test/test.txt match.

Therefore, I narrow down target files by exact match of INPUT_FILES so that only test/test.txt matches.

[jackton1]

@all-contributors please add @massongit for code

[allcontributors]

@jackton1

@massongit already contributed before to code

[jackton1]

Looks good. 👍