anchor.diff:  
   # Release parameters
   ENV GOOGLEAPIS_HASH 254c358cfc638a1fadd2efd9a6ba46cf2e224400
  -ENV GAPIC_GENERATOR_HASH b98a8792cf8551005447fd39eec380d936d9c509 
  +ENV GAPIC_GENERATOR_HASH b98a8792cf8551005447fd39eec380d936d9c509
   ENV ARTMAN_VERSION 0.15.4
   
   ENV DEBIAN_FRONTEND noninteractive
  
positive.code:     && rm dotnet.tar.gz \
      && ln -s /usr/share/dotnet/dotnet /usr/bin/dotnet
  
  # Install couple of git repos
  RUN git clone https://github.com/googleapis/googleapis \
    && cd googleapis \
    && git checkout $GOOGLEAPIS_HASH \
    && cd .. \
    && rm -rf /googleapis/.git/
  RUN git clone https://github.com/googleapis/gapic-generator toolkit \
    && cd toolkit/ \
    && git checkout $GAPIC_GENERATOR_HASH \
    && ./gradlew fatJar \
    && ./gradlew createToolPaths \
    && cd .. \
    && rm -rf /toolkit/.git/
  ENV TOOLKIT_HOME /toolkit
  
  # Install toolkit.
  RUN cd /toolkit \
    && ./gradlew install \
    && ./gradlew build \
    && cd /
  
  # Setup git config used by github commit pushing.
  RUN git config --global user.email googleapis-publisher@google.com \
  
negative.code:   && gem install grpc-tools --version '=1.10.0' --no-ri --no-rdoc
  
  # Install grpc_php_plugin
  RUN git clone -b v1.7.2 --recurse-submodules https://github.com/grpc/grpc.git /temp/grpc \
    && cd /temp/grpc \
    && make -j $(nproc) grpc_php_plugin \
    && mv ./bins/opt/grpc_php_plugin /usr/local/bin/ \
    && cd / \
  