Add Dockerfile

Dockerfile

+FROM python:2.7.15-slim-stretch
+
+ADD . /webssh
+WORKDIR /webssh
+RUN pip install -r requirements.txt -i https://pypi.douban.com/simple
+RUN python setup.py install
+EXPOSE 8888
+CMD ["--address=0.0.0.0", "--port=8888"]
+
+ENTRYPOINT ["wssh"]
+
+
+