anchor.diff:  RUN chmod +x /usr/sbin/sshd
   
   EXPOSE 22
  -VOLUME /var/lib/docker
  +#VOLUME /var/lib/docker
   CMD ["/usr/sbin/sshd", "-D"]
  
positive.code: FROM java:7
  
  # update packages and install maven
  RUN  \
  
negative.code:   sed -i 's/# \(.*multiverse$\)/\1/g' /etc/apt/sources.list && \
    apt-get update && \
    apt-get -y upgrade && \
    apt-get install -y maven ssh sudo curl 
  
  # Jenkins user
  RUN useradd -m -s /bin/bash jenkins && \
  