RUN apt-get update && apt-get -y install wget xz-utils
RUN wget http://releases.llvm.org/5.0.0/clang+llvm-5.0.0-linux-x86_64-ubuntu14.04.tar.xz
RUN tar xf clang+llvm-5.0.0-linux-x86_64-ubuntu14.04.tar.xz
RUN ln -s /clang+llvm-5.0.0-linux-x86_64-ubuntu14.04/bin/clang-format /usr/local/bin/clang-format
ENV CLANG_FORMAT=clang-format