anchor.diff:  
   RUN apt-get update -y
   
  +# root
  +RUN echo 'root:root' | chpasswd
  +
  +RUN mkdir /root/.ssh
  +RUN chmod 700 /root/.ssh
  +ADD authorized_keys /root/.ssh/authorized_keys
  +RUN chmod 644 /root/.ssh/authorized_keys
  +
   # user add
  -RUN useradd fisto
  -RUN echo 'fisto:fisto' | chpasswd
  -RUN echo 'fisto ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers.d/fisto
  -RUN mkdir /home/fisto
  +#RUN useradd fisto
  +#RUN echo 'fisto:fisto' | chpasswd
  +#RUN echo 'fisto ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers.d/fisto
  +#RUN chmod 440 /etc/sudoers.d/fisto
  +
  +#RUN mkdir /home/fisto
  +#RUN chown fisto:fisto /home/fisto
  +
  +#RUN mkdir /home/fisto/.ssh
  +#RUN chown fisto:fisto /home/fisto/.ssh
  +#RUN chmod 700 /home/fisto/.ssh
  +
  +#ADD authorized_keys /home/fisto/.ssh/authorized_keys
  +#RUN chown fisto:fisto /home/fisto/.ssh/authorized_keys
  +#RUN chmod 644 /home/fisto/.ssh/authorized_keys
   
   # ssh
   RUN apt-get install -y openssh-server
  
positive.code: RUN apt-get install git -y
  
  # rbenv
  RUN git clone git://github.com/sstephenson/rbenv.git ~/.rbenv
  RUN git clone https://github.com/sstephenson/ruby-build.git ~/.rbenv/plugins/ruby-build
  
  # Ruby 2.1.1
  RUN apt-get install build-essential libssl-dev -y
  ADD rbenv.sh /opt/rbenv.sh
  RUN bash /opt/rbenv.sh
  #RUN ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key
  #RUN ssh-keygen -t dsa -f /etc/ssh/ssh_host_dsa_key
  
  # mongodb
  #RUN apt-key adv --keyserver keyserver.ubuntu.com --recv 7F0CEB10
  
negative.code: RUN sed -ri 's/#UsePAM no/UsePAM no/g' /etc/ssh/sshd_config
  RUN mkdir /var/run/sshd
  RUN chmod 711 /var/run/sshd
  CMD /usr/sbin/sshd -D
  
  # Nginx
  RUN sed -i -e "1i deb http://nginx.org/packages/mainline/ubuntu/ precise nginx" /etc/apt/sources.list
  RUN sed -i -e "2i deb-src http://nginx.org/packages/mainline/ubuntu/ precise nginx" /etc/apt/sources.list
  
  #RUN apt-get install wget -y
  RUN wget http://nginx.org/keys/nginx_signing.key
  RUN apt-key add nginx_signing.key
  
  