anchor.diff:      cd nvml && git checkout 630862e82f && make && make install
   
   # deploy ndctl required by pmdk
  -RUN cd /ws && git clone https://github.com/pmem/ndctl.git && \
  -    cd ndctl && git checkout ndctl-60.y && \
  -    ./autogen.sh && ./configure CFLAGS='-g -O0' --prefix=/usr --sysconfdir=/etc --libdir=/usr/lib && \
  -    make && make check && make install
  +#RUN cd /ws && git clone https://github.com/pmem/ndctl.git && \
  +#    cd ndctl && git checkout ndctl-64.y && \
  +#    ./autogen.sh && ./configure CFLAGS='-g -O0' --prefix=/usr --sysconfdir=/etc --libdir=/usr/lib && \
  +#    make && make check && make install
   
   # deploy pmdk
   RUN cd /ws && git clone https://github.com/pmem/pmdk.git && \
  -    cd pmdk && git checkout stable-1.4 && make && \
  +    cd pmdk && git checkout stable-1.6 && make && \
   #    the test run time is too long
   #    cp src/test/testconfig.sh.example src/test/testconfig.sh && make check && \
       make install
  
positive.code: 
  WORKDIR /ws
  CMD ["bash"]
  
  
negative.code: 
  RUN curl -sSL https://s3.amazonaws.com/download.fpcomplete.com/centos/7/fpco.repo | tee /etc/yum.repos.d/fpco.repo
  
  RUN yum -y install epel-release
  RUN yum -y update && yum -y groupinstall 'Development Tools' && \
      yum -y install java-devel cmake check check-devel libuuid-devel man zlib-devel wget stack && yum clean all
  
  # required packages by pmdk
  RUN yum install -y which autoconf asciidoc xmlto automake libtool kmod-devel libudev-devel uuid-devel json-c-devel \
                     asciidoc asciidoc-doc bash-completion graphviz keyutils-libs-devel asciidoctor ndctl ndctl-devel daxctl daxctl-devel
  
  RUN curl -O http://mirror.cogentco.com/pub/apache/maven/maven-3/3.5.4/binaries/apache-maven-3.5.4-bin.tar.gz && \
      tar xvf apache-maven-3.5.4-bin.tar.gz && \
  