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Merge pull request #12 from mzihlmann/warn-about-cache-misses 

warn about potential cache-misses explicitly
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mzihlmann 2025-05-26 14:53:25 +01:00 committed by GitHub
parent a3c3a200a7 febeb075a1
commit 176f8f6e0b
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1 changed files with 14 additions and 0 deletions
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14
pkg/executor/build.go
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@ -434,6 +434,20 @@ func (s *stageBuilder) build() error {
logrus.Debugf("Build: cache key for command %v %v", command.String(), ck)
// Raise Warnings for commands that are uncacheable
switch command.(type) {
case *commands.RunCommand:
if len(files) == 0 {
logrus.Warn("cache-violation: RUN created an empty layer, this will cause a diff when rebuilding from cache for the first time.")
}
case *commands.WorkdirCommand:
if len(files) > 0 {
logrus.Warn("cache-violation: WORKDIR implicitly created a folder that can't be cached - consider creating it explicitly with RUN instead. https://github.com/GoogleContainerTools/kaniko/issues/3340")
}
case *commands.AddCommand:
logrus.Warn("cache-violation: ADD can't be cached - consider using COPY instead.")
}
// Push layer to cache (in parallel) now along with new config file
if command.ShouldCacheOutput() && !s.opts.NoPushCache {
cacheGroup.Go(func() error {