Explain how to copy data inside and outside the Docker container __docker

http://blog.csdn.net/yangzhenping/article/details/43667785

How to copy data inside and outside the Docker container.

copy files from the container to the host [plain] view Plain copy docker CP <containerid>:/file/path/within/container/host/path/target

copy files from host to container

Reference from:

Http://stackoverflow.com/questions/22907231/copying-files-from-host-to-docker-container
1. Use-V to mount the host data volume into the container (you need to specify the mount directory when you Docker run to create the container)

[plain] view plain copy docker run-v/path/to/hostdir:/mnt $container (image name or image ID)
Copy cp/mnt/sourcefile/path/to/destfile inside the container

2. Copy to the container physical storage system directly on the host

A. Get the container name or ID:
[plain] view plain copy $ docker PS

B. Get the ID of the entire container
[plain] view plain copy $ docker inspect-f ' {{. ID} ' Step a gets the name or ID

C. Copy files on the host:
[plain] view plain copy $ sudo cp path-file-host/var/lib/docker/aufs/mnt/full_container_id/path-new-file or $ sudo cp path-file-host/var/lib/docker/devicemapper/mnt/123abc<<id>>/rootfs/root

Example:
[Plain] View plain copy $ docker ps      container id       IMAGE    COMMAND       CREATED       STATUS       PORTS         NAMES      d8e703d7e303   solidleon/ssh:latest       /usr/sbin/sshd -D                       cranky_pare      $  docker inspect -f    ' {{. Id} '  cranky_pare      or    $ docker inspect -f     ' {{. Id} '  d8e703d7e303      d8e703d7e3039a6df6d01bd7fb58d1882e592a85059eb16c4b83cf91847f88e5      $&NBSP;SUDO&NBSP;CP  file.txt /var/lib/docker/aufs/mnt/**d8e703d7e3039a6df6d01bd7fb58d1882e592a85059eb16c4b83cf91847f88e5  

3. With the input output character

[plain] view plain copy docker run-i ubuntu/bin/bash-c ' cat >/path/to/container/file ' </path/to/host/f ile/

Or
[plain] view plain copy docker exec-it <container_id> bash-c ' cat >/path/to/container/file ' </pat h/to/host/file/

Docker can support the mounting of a directory on a host to a mirror.

Docker Run-it-v/home/dock/downloads:/usr/downloads Ubuntu64/bin/bash

With the-v argument, the host directory is preceded by a colon and must be an absolute path, followed by a colon-mounted path within the mirror.

You can now share files from the host in the mirror.

The path permission for the default mount is read-write. If specified as read-only can be used: RO

Docker Run-it-v/home/dock/downloads:/usr/downloads:ro Ubuntu64/bin/bash