Yeah, I know. It looks pretty simple but apparently, up to the date of writing this post, moving files from your host inside your Docker containers is not yet achievable but it's included in the roadmap of version 1.8. Surprisingly enough, the opposite (From container to host is doable
docker cp already). So how do we do it?
First find the container that you want to move your files into:
docker ps -l
the result will be something like the below:
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES f54b160e2743 sequenceiq/hadoop-docker:2.7.0 "/etc/bootstrap.sh - 2 minutes ago Up 2 minutes 2122/tcp, 8030-8033/tcp, 8040/tcp, 8042/tcp, 8088/tcp, 19888/tcp, 49707/tcp, 50010/tcp, 50020/tcp, 50070/tcp, 50075/tcp, 50090/tcp distracted_franklin
Use the CONTAINER_ID from above and issue the command:
cat $FILE_NAME | sudo docker exec -i $CONTAINER_ID sh -c 'cat > /path_to_pasted_file'
Voila! It's done! 😀😀😀