如何使用docker-py(docker SDK)将文件从主机复制到容器 [英] How to copy a file from host to container using docker-py (docker SDK)

问题描述

我知道，有一种方法可以使用docker cp在主机和docker容器之间双向复制文件，也可以使用docker-py从正在运行的容器中获取文件.但是我无法弄清楚如何(或什至有可能)使用docker-py将文件从主机复制到正在运行的容器. 你们有处理此类问题的经验吗?是否可以做，或者我必须使用python os.system执行命令.我想避免这种解决方案.

I know, there is possible way how to copy file bidirectionally between host and docker container using docker cp and also it is possible to obtain file from running container using docker-py. But I am not able to figure out how (or if it is even possible) copy file from host to running container using docker-py. Do you guys have any experiences with such kind of problem? Is it possible to do or I have to execute command using python os.system. I would like to avoid this solution.

推荐答案

类似的方法应该起作用:

Something like this should work:

import os
import tarfile
import docker

client = docker.from_env()

def copy_to(src, dst):
    name, dst = dst.split(':')
    container = client.containers.get(name)

    os.chdir(os.path.dirname(src))
    srcname = os.path.basename(src)
    tar = tarfile.open(src + '.tar', mode='w')
    try:
        tar.add(srcname)
    finally:
        tar.close()

    data = open(src + '.tar', 'rb').read()
    container.put_archive(os.path.dirname(dst), data)

然后像这样使用它:

copy_to('/local/foo.txt', 'my-container:/tmp/foo.txt')

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