We are copying a directory not a single file
We are copying a directory not a single file

When populating a container from a container image with a
volume directory, we need to copy the content of the source
directory into the target.  The code was mistakenly looking
for a file not a directory.

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

Closes: #471
Approved by: nalind

ipbabble/buildah,nalind/buildah,TomSweeneyRedHat/buildah,nalind/buildah-1,rhatdan/buildah,nalind/buildah,rhatdan/buildah,TomSweeneyRedHat/buildah,nalind/buildah-1,projectatomic/buildah,nalind/buildah-1,projectatomic/buildah,projectatomic/buildah,ipbabble/buildah,TomSweeneyRedHat/buildah,rhatdan/buildah