Comments (1)
A reproducer for the first part:
# Create a Zstd-compressed image
skopeo --override-os linux --insecure-policy copy --dest-tls-verify=false --dest-compress-format zstd docker://quay.io/libpod/alpine docker://…/zstd
# The above does not compute/record an uncompressed digest in the BIC, making reuse impossible;
# force decompression to create the uncompressed digest records
skopeo --override-os linux --insecure-policy copy --dest-decompress=true --tls-verify=false docker://quay.io/libpod/alpine dir:t
skopeo --override-os linux --insecure-policy copy --dest-decompress=true --tls-verify=false docker://…/zstd dir:t
# A plain copy now finds the Zstd layer on the destination, and forces a conversion to OCI
skopeo --override-os linux --insecure-policy copy --dest-tls-verify=false docker://quay.io/libpod/alpine docker://…/dest2
# … and a copy forcing manifest schema to non-OCI fails:
skopeo --override-os linux --insecure-policy copy --dest-tls-verify=false --format schema2 docker://quay.io/libpod/alpine docker://…/dest-s2
# … creating an updated image manifest: preparing updated manifest, layer \"sha256:…\": zstd compression is not supported for type \"application/vnd.docker.image.rootfs.diff.tar.gzip\"
# With the fix:
# level=debug msg="Ignoring candidate blob sha256:… in …/dest2, compression zstd does not match required nil or MIME types []string{\"application/vnd.docker.distribution.manifest.v2+json\"}"
The second part is not as easy to reproduce; only dir
is manifest-schema-agnostic, but it also does not reuse layers across copies.
from image.
Related Issues (20)
- Docker client code can no longer talk to the latest verson of the docker daemon 25.0.0 HOT 5
- Allow empty OCI configs for artifacts HOT 9
- policy.json overwrite not honouring $XDG_CONFIG_HOME HOT 3
- Podman cannot pull image from local registry HOT 4
- copy.Options.EnsureCompressionVariantsExist doesn’t detect existing variants with zstd:chunked
- support multiple sigstore keys HOT 6
- How can I copy from a tar file stream HOT 7
- "slices" module only in go 1.21 HOT 1
- Cannot pull sigstore signed image with podman HOT 4
- Error inspecting local manifest-lists HOT 6
- platform.WantedPlatforms is noisy on macOS HOT 7
- Incorrect syntax highlighting in containers-transports.5
- Why do we get the whole image when inspect with docker daemon? HOT 2
- Support sigstore BYO PKI verification HOT 1
- Support more arbitrary credential helper executable names? HOT 4
- OCI image index loose the artifactType property on copy HOT 4
- zstd:chunked and layer encryption don’t make sense together HOT 3
- How to change the policy.json default path? HOT 1
- Mirrors are ignored when registry is blocked HOT 11
- Support Witnessing Sigstore Signing with a Timestamp Authority Server HOT 1
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from image.