anchor.diff:        && git config --global core.editor "vim"
   
   # Clang
  -RUN update-alternatives --install /usr/bin/clang clang /usr/bin/clang-6.0 1000 \
  -  && update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-6.0 1000 \
  -  && update-alternatives --install /usr/bin/lldb lldb /usr/bin/lldb-6.0 1000
  +RUN update-alternatives --install /usr/bin/clang clang /usr/bin/clang-${LLVM_VERSION} 1000 \
  +  && update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-${LLVM_VERSION} 1000 \
  +  && update-alternatives --install /usr/bin/lldb lldb /usr/bin/lldb-${LLVM_VERSION} 1000
   ENV CC=/usr/bin/clang
   ENV CXX=/usr/bin/clang++
   
  
positive.code: FROM project5/base
  MAINTAINER benjamin.gemmill@gmail.com
  
  # clang repository from https://apt.llvm.org
  RUN apt-get update && apt-get install -y \
        software-properties-common curl \
        && curl https://apt.llvm.org/llvm-snapshot.gpg.key | apt-key add - \
        && apt-add-repository "deb http://apt.llvm.org/`lsb_release -cs`/ llvm-toolchain-`lsb_release -cs`-6.0 main"
  
  RUN apt-get update && apt-get install -y \
        sudo \
  
negative.code:       default-jdk \
        python python-dev python-pip \
        python3 python3-dev python3-pip \
        clang-${LLVM_VERSION} lldb-${LLVM_VERSION} lld-${LLVM_VERSION} \
        cmake make ccache \
        libssl-dev libz-dev
  
  