3373: ADD --checksum - #1027
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Included review availability: Your plan provides up to 2 included reviews per hour; 0 remain after this review. 📝 WalkthroughWalkthroughKaniko adds optional ChangesADD checksum verification
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: ⚪ Minimal · up to The PR adds checksum verification, but the README still contains a contradictory statement about when verification occurs, which could briefly confuse users configuring the feature. This is a localized documentation follow-up; no merge-blocking risk remains. Sequence Diagram(s)sequenceDiagram
participant Dockerfile
participant ADD
participant DownloadFileToDest
participant RemoteSource
Dockerfile->>ADD: parse ADD --checksum
ADD->>ADD: resolve and validate digest
ADD->>DownloadFileToDest: pass checksum
DownloadFileToDest->>RemoteSource: download HTTP(S) content
DownloadFileToDest->>DownloadFileToDest: hash downloaded content
DownloadFileToDest-->>ADD: return success or mismatch error
Suggested reviewers: 🚥 Pre-merge checks | ✅ 3 | ❌ 2❌ Failed checks (2 warnings)
✅ Passed checks (3 passed)
Full details: Description checkExplanation The description identifies issue Full details: Out of Scope Changes checkExplanation The PR includes unrelated changes: FS Cleaning timing instrumentation in DeleteFilesystem and adding Dockerfile_test_issue_2567 to the Kaniko-only test set. The checksum implementation, dependency, documentation, and issue 3373 tests are in scope. Full details: Docstring CoverageExplanation Docstring coverage is 50.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 2 functions across 4 files. (2 skipped: 2 unsupported.) ✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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mzihlmann
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Actionable comments posted: 1
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Inline comments:
In `@README.md`:
- Around line 1471-1472: Update the README text describing ADD --checksum to
state that verification is skipped when FF_KANIKO_ADD_CHECKSUM is disabled,
while noting that enabling it verifies the digest and fails the build on
mismatch.
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📒 Files selected for processing (5)
README.mdgo.modintegration/images.gopkg/config/featureflags.gopkg/util/fs_util.go
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2 participants
Closes GoogleContainerTools/kaniko#3373
ADD --checksum=sha256:<hex> <url> <dst>is a supply-chain control. The user has stated an integrity requirement, and we parsed the flag and never checked it, so a substituted download passed and the build succeeded.The download is now hashed while it is written and the build fails on a mismatch. The comparison is always against a sha256 because buildkit's http source hardcodes that, so a correct sha512 has to fail the build the same way docker fails it.
Summary by CodeRabbit
New Features
ADD --checksum.Documentation
Tests