anchor.diff:  
   RUN echo The proxy set : ${http_proxy}
   
  -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
  +    yum -y install java-devel cmake check check-devel libuuid-devel man zlib-devel && 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 mkdir -p /ws
   
   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 && \
  
positive.code: # limitations under the License.
  #
  
  FROM centos:7.4.1708
  MAINTAINER Gang Wang (garyw@apache.org)
  
  #set up your proxy below, please refer to readme in the Docker folder
  
negative.code: ENV JAVA_HOME /usr/lib/jvm/java
  ENV PATH $JAVA_HOME/bin:$PATH
  
  RUN cd /ws && git clone https://github.com/NonVolatileComputing/pmalloc.git && \
      cd pmalloc && mkdir build && cd build && cmake .. && make && make install
  
  RUN yum -y install ndctl-devel libpmem-devel libvmem-devel libpmemobj-devel
  
  RUN touch /etc/profile.d/mvn.sh && chmod +x /etc/profile.d/mvn.sh && \
      if [ "x" != "x${proxy_host}" ]; then echo export MAVEN_OPTS="\" -DproxySet=\\\"true\\\" -DproxyHost=${proxy_host} -DproxyPort=${proxy_port} \"" > /etc/profile.d/mvn.sh; fi
  