add Dockerfile

Dockerfile

+FROM ubuntu:18.04
+
+RUN echo '\
+deb <mirror> bionic main restricted universe multiverse\n\
+deb <mirror> bionic-updates main restricted universe multiverse\n\
+deb <mirror> bionic-backports main restricted universe multiverse\n\
+deb <mirror> bionic-security main restricted universe multiverse\n'\
+> /etc/apt/sources.list
+RUN sed -ie 's|<mirror>|http://mirrors.tuna.tsinghua.edu.cn/ubuntu/|' /etc/apt/sources.list
+
+RUN apt-get update && apt-get upgrade -y
+RUN apt-get install -y --no-install-recommends \
+        curl \
+        unzip \
+        git \
+        cmake \
+        python \
+        python-pip \
+        python-setuptools \
+        clang-format-5.0 \
+        graphviz
+RUN apt-get autoremove -y && apt-get clean
+RUN pip install wheel pre-commit
+RUN pre-commit autoupdate
+RUN ln -s clang-format-5.0 /usr/bin/clang-format
+RUN cd /tmp && curl -O http://mirrors.neusoft.edu.cn/android/repository/android-ndk-r17b-linux-x86_64.zip
+RUN cd /opt && unzip /tmp/android-ndk-r17b-linux-x86_64.zip
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