Backup and restore named Docker volume

backup-restore-docker-named-volume.md

To backup some_volume to /tmp/some_archive.tar.bz2 simply run:

docker run -it -v some_volume:/volume -v /tmp:/backup alpine \
    tar -cjf /backup/some_archive.tar.bz2 -C /volume ./

And to restore run:

docker run -it -v some_volume:/volume -v /tmp:/backup alpine \
    sh -c "rm -rf /volume/* /volume/..?* /volume/.[!.]* ; tar -C /volume/ -xjf /backup/some_archive.tar.bz2"

From https://loomchild.net/2017/03/26/backup-restore-docker-named-volumes/