Optimize file copying and stage saving between stages. (#605)

This change calculates the exact files and directories needed between
stages used in the COPY command. Instead of saving the entire
stage as a tarball, we now save only the necessary files.
This commit is contained in:
dlorenc
2019-03-13 07:47:28 -07:00
committed by GitHub
parent 6ce3dfb93a
commit 246cc92a33
14 changed files with 469 additions and 49 deletions
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