官方答案在“备份，还原或迁移数据卷”部分中：
sudo docker run --rm --volumes-from DATA -v $(pwd):/backup busy@R_369_2419@ tar cvf /backup/backup.tar /data
# create a new data container
$ sudo docker create -v /data --name DATA2 busy@R_369_2419@ true
# untar the backup files into the new container?s data volume
$ sudo docker run --rm --volumes-from DATA2 -v $(pwd):/backup busy@R_369_2419@ tar xvf /backup/backup.tar
data/
data/sven.txt
# compare to the original container
$ sudo docker run --rm --volumes-from DATA -v `pwd`:/backup busy@R_369_2419@ ls /data
sven.txt
602392714
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