Update Dockerfile

Dockerfile

@@ -21,11 +21,16 @@ RUN git clone https://github.com/zhongkaifu/Seq2SeqSharp.git
 WORKDIR /code/Seq2SeqSharp
 RUN dotnet build Seq2SeqSharp.sln --configuration Release
 
-RUN git clone https://github.com/google/sentencepiece.git
-
 WORKDIR /code/Seq2SeqSharp/ExternalProjects
 RUN unzip SentencePiece.zip
-WORKDIR ls -la
+WORKDIR /code/Seq2SeqSharp/ExternalProjects/SentencePiece
+RUN mkdir build
+WORKDIR /code/Seq2SeqSharp/ExternalProjects/SentencePiece/build
+RUN cmake ..
+RUN make -j $(nproc)
+RUN make install
+RUN ldconfig -v
+RUN spm_encode
 
 
 WORKDIR /code/bin