ContainerRegistry: Remove Authorization header when redirecting on Linux#167
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euanh merged 2 commits intoapple:mainfrom Nov 21, 2025
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ContainerRegistry: Remove Authorization header when redirecting on Linux#167euanh merged 2 commits intoapple:mainfrom
euanh merged 2 commits intoapple:mainfrom
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Motivation ---------- It looks like building images with containertool on Linux fails downloading the base image `swift:slim` from dockerhub. Modifications ------------- Update end to end and integration workflows to test both `scratch` and `swift:slim` base images. Result ------ End-to-End Tests will now fail in release configuration. Test Plan --------- Other tests are not affected by this.
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Docker Hub now redirects pulls for swift:slim to an S3 bucked behind CloudFlare. URLSession on macOS follows the redirect correctly, but URLSession on Linux incorrectly includes an Authorization header which S3 rejects. This commit adds a URLSession delegate which removes the Authorization header when following a redirect.
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Motivation
In #164, @herzi reported a problem building container images based on
swift:slimon Linux. The root cause of the problem is that Docker Hub now redirects pulls forswift:slimto an S3 bucked behind CloudFlare. URLSession on macOS follows the redirect correctly, but URLSession on Linux incorrectly includes anAuthorizationheader which S3 rejects.Modifications
Add a URLSession delegate which removes the
Authorizationheader when following a redirect.Result
Pulling
swift:slimfrom Docker Hub works again.Fixes: #166
Test Plan
scratchandswift:slimBase Images #164 extended the end-to-end tests to useswift:slimas well asscratch, demonstrating the problem. The extended tests now pass.