feat(Dockerfile): for build (#246)

Dockerfile

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+FROM ubuntu:18.04
+MAINTAINER a8568730
+
+RUN apt update
+RUN apt install -y \
+cmake \
+libboost-dev \
+libboost-filesystem-dev libboost-regex-dev libboost-system-dev libboost-locale-dev \
+libgoogle-glog-dev \
+libgtest-dev \
+libyaml-cpp-dev \
+libleveldb-dev \
+libmarisa-dev
+
+RUN apt install -y git
+
+# Manually install libopencc
+RUN git clone https://github.com/BYVoid/OpenCC.git
+WORKDIR OpenCC/
+RUN apt install -y doxygen
+RUN make
+RUN make install
+
+# Fix libgtest problem during compiling
+WORKDIR /usr/src/gtest
+RUN cmake CMakeLists.txt
+RUN make
+#copy or symlink libgtest.a and libgtest_main.a to your /usr/lib folder
+RUN cp *.a /usr/lib
+
+# Build librime
+WORKDIR /
+RUN git clone https://github.com/rime/librime.git
+WORKDIR librime/
+RUN make
+RUN make install