feat: add support for container cp with tarballs #4704
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Signed-off-by: David Son <[email protected]>
sondavidb
commented
Jan 16, 2026
| - `nerdctl cp [OPTIONS] CONTAINER:SRC_PATH DEST_PATH|-` | ||
| - `nerdctl cp [OPTIONS] SRC_PATH|- CONTAINER:DEST_PATH` | ||
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| Using `-` as the `SRC_PATH` streams the contents of `STDIN` as a tar archive. The command extracts the content of the tar to the `DEST_PATH` in container's filesystem. In this case, `DEST_PATH` must specify a directory. Using `-` as the `DEST_PATH` streams the contents of the resource as a tar archive to `STDOUT`. |
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FYI, copied this exact wording from https://docs.docker.com/reference/cli/docker/container/cp/#corner-cases. LMK if this is a problem in any way.
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Will get to adding testing tomorrow. Having some trouble adding tests to the existing testing suite for now. |
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Closes #4691
This PR should allow support for the following in
container cp:-in src to allow streaming the contents of a tarball into a container.-in dst to allow streaming the contents of a container into a tarball that is written to stdout