Created by: ghost

Dockerhub.com complains

Step 18 : COPY ./paddle/scripts/docker/root/ /root/
lstat paddle/scripts/docker/root/: no such file or directory

@helinwang found an issue with Dockerhub: https://github.com/docker/hub-feedback/issues/841 . It seems that Dockerhub.com doesn't cd into the git-cloned directory before running docker build ....