问题
It may sound trivial but I couldn't find a easy way to copy multiple files into the root folder of a docker volume. I am using Ubuntu Xenial 16.04 and Docker 1.12.1. For example if I have an Ubuntu container with the volume /my_data:
docker run --name my_container -v /my_data -d ubuntu:latest
In my host machine I have a folder called /tmp/my_data/ with multiple files inside, and I would like to copy all those files into the volume /my_data in my_container. I have tried the following approaches but none of them work:
docker cp /tmp/my_data my_container:/
docker cp /tmp/my_data/* my_container:/my_data/
Does someone know a work around for this issue?
回答1:
Actually it was easier than I though, just need to add a dot in the host path and it will work as expected, copying all files and folders within /my_data folder
docker cp /tmp/my_data/. my_container:/my_data
回答2:
As a workaround you can create a loop:
for i in /tmp/my_data/*;do docker cp /tmp/my_data/"$i" my_container:/my_data/;done
*Note: The specific workaround wont copy hidden files or folders inside the my_data folder.
来源：https://stackoverflow.com/questions/39419702/how-to-copy-multiple-files-into-a-docker-data-volume