Mounting a single file from a Docker data volume in a Docker

问题

I'm trying to mount a single file from a Docker volume in a container when using "docker run".

I've been able to mount an entire volume as a directory, e.g:

docker run -v my_volume:/root/volume my_container 

I've also mounted single files from the physical machine, e.g:

docker run -v /usr/local/bin/docker:/usr/local/bin/docker 

Is there a way?

回答1:

Is there a way always destination path/file doesn't exist in the container, if you've created a named volume and a bind to its directory (similar to deprecated volumes_from)

docker run -v /var/lib/docker/volumes/my_volume/_data/MY_FILE.txt:/destination_folder/MY_FILE.txt

That's why when you create a named volume and run a service/container with docker run -v my_volume:/root/volume my_container, data is stored in /var/lib/docker/volumes/my_volume/_data

来源：https://stackoverflow.com/questions/36549144/mounting-a-single-file-from-a-docker-data-volume-in-a-docker