[v0.6 backport] inline cache: fix handling of duplicate blobs #1572
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Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com> (cherry picked from commit be1a6aa) Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
tonistiigi
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Jul 16, 2020
This was referenced Jul 16, 2020
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backport of #1568
fixes #1388 cache-from working unreliably
Blob digest shouldn't be used as a unique identifier as it may appear multiple times in the layer chain. Especially in moby where the digest is not compressed.