Added Dockerfile

Dockerfile

@@ -0,0 +1,16 @@
+FROM python:3.8-alpine
+
+WORKDIR /usr/src/app
+
+COPY requirements.txt ./
+RUN pip install -r requirements.txt
+
+RUN mkdir -p /usr/src/epcis
+WORKDIR /usr/src/epcis
+
+# run this like 
+# docker run -v `pwd`:/usr/src/epcis epcis-hash -b my-events.json
+
+COPY . /usr/src/app/
+ENTRYPOINT [ "python", "/usr/src/app/epcis_event_hash_generator/main.py" ]
+CMD ["-h"]