anchor.diff:  RUN yum update -y && \
     yum install -y readline-devel pcre-devel openssl-devel gcc \
     gcc+ gcc-c++ autoconf automake libtool \
  -  bzip2 unzip git pwgen openssh-server
  +  bzip2 unzip git
   
   ENV AUTHORIZED_KEYS **None**
   ENV OPENRESTY_VERSION 1.7.10.1
  
positive.code: ENV VAR_PREFIX /var/nginx
  ENV LUAJIT_DIR $OPENRESTY_PREFIX/luajit
  ENV LUAJIT_INCLUDE $LUAJIT_DIR/include/luajit-2.1
  
  # Update ssh keys
  RUN rm -f /etc/ssh/ssh_host_ecdsa_key /etc/ssh/ssh_host_rsa_key /etc/ssh/ssh_host_ed25519_key && \
      ssh-keygen -q -N "" -t dsa -f /etc/ssh/ssh_host_ecdsa_key && \
      ssh-keygen -q -N "" -t rsa -f /etc/ssh/ssh_host_rsa_key && \
      ssh-keygen -q -N "" -t ed25519 -f /etc/ssh/ssh_host_ed25519_key && \
      sed -i "s/#UsePrivilegeSeparation.*/UsePrivilegeSeparation no/g" /etc/ssh/sshd_config
  
  RUN echo "Install openresty ..." \
    && cd /tmp/ngx_openresty-$OPENRESTY_VERSION \
  
negative.code:   && make build && make install \
    && ln -sf /usr/local/luarocks/bin/luarocks /usr/local/bin/
  
  RUN yum install -y pwgen openssh-server
  
  # Update ssh keys
  RUN rm -f /etc/ssh/ssh_host_ecdsa_key /etc/ssh/ssh_host_rsa_key /etc/ssh/ssh_host_ed25519_key && \
      ssh-keygen -q -N "" -t dsa -f /etc/ssh/ssh_host_ecdsa_key && \
      ssh-keygen -q -N "" -t rsa -f /etc/ssh/ssh_host_rsa_key && \
      ssh-keygen -q -N "" -t ed25519 -f /etc/ssh/ssh_host_ed25519_key && \
      sed -i "s/#UsePrivilegeSeparation.*/UsePrivilegeSeparation no/g" /etc/ssh/sshd_config
  
  RUN rm -rf /tmp/*
  ADD set_root_pw.sh /set_root_pw.sh
  ADD run.sh /run.sh
  