Copying files from Docker container to host

Question

I\'m thinking of using Docker to build my dependencies on a Continuous Integration (CI) server, so that I don\'t have to install all the runtimes and libraries on the agents

Answer 1

I am posting this for anyone that is using Docker for Mac. This is what worked for me:

 $ mkdir mybackup # local directory on Mac

 $ docker run --rm --volumes-from  \
    -v `pwd`/mybackup:/backup \  
    busybox \                   
    cp /data/mydata.txt /backup 

Note that when I mount using -v that backup directory is automatically created.

I hope this is useful to someone someday. :)