How to copy a file from host to container using docker-py (docker SDK)

Question

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

Answer 1

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)

And then use it like:

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