ubuntu for kens with gtest

Dockerfile

FROM ubuntu:16.04

RUN sed -i 's/archive.ubuntu.com/ftp.kaist.ac.kr/g' /etc/apt/sources.list

RUN apt-get update && apt-get install -y build-essential cmake git \
        && git clone --depth 1 https://github.com/google/googletest.git \
        && cd /googletest/googletest && mkdir build && cd build \
        && cmake .. && make && cp libgtest*.a /usr/local/lib \
        && apt-get clean && cd / && rm -rf /googletest

CMD ["bash"]