Add a dockerfile for local workflow in umbrella repo (#246)

local.Dockerfile

+ARG METADATASERVICE_BASE
+ARG SEARCHSERVICE_BASE
+
+FROM node:8 as node-stage
+
+COPY . /app
+
+WORKDIR /app/amundsen_application/static
+
+RUN npm install
+RUN npm rebuild node-sass
+RUN npm run dev-build
+
+FROM python:3
+
+COPY --from=node-stage /app /app
+
+WORKDIR /app
+
+RUN pip3 install -r requirements3.txt
+RUN python3 setup.py install
+
+ENTRYPOINT [ "python3" ]
+CMD [ "amundsen_application/wsgi.py" ]