How to copy files from dockerfile to host?

Question

I want to get some files when dockerfile built successfully, but it doesn\'t copy files from container to host.

That means when I have built dockerfile, the files

Answer 1

On completion of Docker Build using Dockerfile, following worked for me :

where /var/lib/docker/ is Docker Root Dir: at my setup.

sudo find /var/lib/docker/ -name DESIRED_FILE -type f | xargs sudo ls -hrt | tail -1 | grep tgz | xargs  -i  sudo cp -v  '{}' PATH_ON_HOST