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moby--moby/daemon/copy.go

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package daemon
import (
"fmt"
"io"
"github.com/docker/docker/engine"
)
func (daemon *Daemon) ContainerCopy(job *engine.Job) error {
if len(job.Args) != 2 {
return fmt.Errorf("Usage: %s CONTAINER RESOURCE\n", job.Name)
}
var (
name = job.Args[0]
resource = job.Args[1]
)
container, err := daemon.Get(name)
if err != nil {
return err
}
data, err := container.Copy(resource)
if err != nil {
return err
}
defer data.Close()
if _, err := io.Copy(job.Stdout, data); err != nil {
return err
}
return nil
}