anchor.diff:  ARG BUCK_SHA=82edf0bdbe63ef99cff17114458d4bd442a55fd7 
   ARG WATCHMAN_VER=v4.3.0
   ARG DEBIAN_FRONTEND=noninteractive
  -
   
   # Accept the oracle java license
   RUN echo oracle-java8-installer shared/accepted-oracle-license-v1-1 select true | /usr/bin/debconf-set-selections
  
positive.code:         bison \
          build-essential \
          clang-3.7 \
          clang-tidy-3.7 \
          cmake \
          curl \
          flex \
          g++-5 \
          gdc \
          git \
          gperf \
          libboost-all-dev \
          libcap-dev \
          libdouble-conversion-dev \
          libevent-dev \
          libgflags-dev \
          libgoogle-glog-dev \
          libgtest-dev \
          libjemalloc-dev \
          libkrb5-dev \
          liblz4-dev \
  
negative.code:     echo "  cxx    = /usr/bin/g++-5"        >> /root/.buckconfig && \
      echo "  cxxpp  = /usr/bin/g++-5"        >> /root/.buckconfig && \
      echo "  ld     = /usr/bin/g++-5"        >> /root/.buckconfig && \
      echo "  cxxflags = -std=c++14 ${CXXFLAGS} -Weffc++ -Wextra" >> /root/.buckconfig && \
      echo "[cxx#clang]" >> /root/.buckconfig && \
      echo "  cc     = /usr/bin/clang-3.7"    >> /root/.buckconfig && \
      echo "  cpp    = /usr/bin/clang-3.7"    >> /root/.buckconfig && \
  