contenthash: include basename in content checksum for wildcards#2018
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needs rebase |
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@tonistiigi should we cherry-pick this one for v0.8.x ? |
While we generally ignore the basename in this layer, for wildcards there in no other place to add the basename to the checksum as they can not be resolved earlier. Before the basename that was in the checksum was the wildcard itself, so if the wildcard remained same, content remained same but the file where wildcard pointed to was renamed, the cache was not invalidated. Unfortunately, this change breaks cache for all copy commands that use a wildcard. Signed-off-by: Tonis Tiigi <[email protected]>
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@AkihiroSuda @tiborvass @hinshun I see this was rebased; ptal |
AkihiroSuda
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fixes #2008
While we generally ignore the basename in this layer, for wildcards
there in no other place to add the basename to the checksum as they
can not be resolved earlier. Before the basename that was in the
checksum was the wildcard itself, so if the wildcard remained same,
content remained same but the file where wildcard pointed to was
renamed, the cache was not invalidated.
Unfortunately, this change breaks cache for all copy commands that
use a wildcard.
Signed-off-by: Tonis Tiigi [email protected]