use this comand sudo docker run -itd --gpus all -p 5000:5000 nvidia/digits maybe it works. you cant find any file abot container in your file systems. if you want to see docker file system follow this command.
sudo docker ps it list your docker images
sudo docker exec -it zen_haibt /bin/bash with this command you can login doccer images terminal but zen_haibt this is your image name. first use this command "sudo docker ps" and learn your image name after replace 2. command. dont forget in every restart your computer, image name will change.
sudo docker cp /home/musa/Downloads. zen_haibt:/home/ with this command you can send file to container /home/ from your computer home/
actually there is a way mount your image as a hdd like your other partition, but i cant learn it yet. if you find it please share with me. it is easyest way.
have a nice day.