docs: update list of unimplemented Docker features#4747
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AkihiroSuda merged 1 commit intocontainerd:mainfrom Feb 20, 2026
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Update command-reference.md to reflect the current state of feature parity with Docker: - Remove docker diff from unimplemented commands (now implemented) - Remove --isolation from unimplemented docker run flags (now implemented) - Remove --interactive from unimplemented docker start flags (now implemented) - Add --mount type=image as unimplemented mount type - Add :z and :Z (SELinux relabeling) as unimplemented volume options - Add docker buildx debug (buildx debugger) to unimplemented commands Fixes containerd#3867 Signed-off-by: rohansood10 <rohansood10@users.noreply.github.com>
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Summary
Updates the unimplemented Docker features list in
docs/command-reference.mdto reflect the current state of nerdctl's feature parity with Docker.Features now implemented (removed from unimplemented lists)
docker diff— removed from "Unimplemented Docker commands" section (implemented incontainer_diff.go)docker run --isolation— removed from unimplemented run flags (now supported withdefault|process|host|hyperv)docker start --interactive— removed from unimplemented start flags (now supported)Missing Docker features added to documentation
--mount type=image— noted as unimplemented mount type (moby#48798):zand:Zvolume options — SELinux relabeling not yet supported (#371)docker buildx debug— buildx debugger added to unimplemented commands listFixes #3867
Note: This is a partial update. There are additional items that could be audited (compose flags, network flags, etc.) but this covers the most notable changes.