added docker configs

Dockerfile

@@ -0,0 +1,18 @@
+FROM alpine:3.10.2
+
+WORKDIR '/tmp'
+
+COPY ./pm /data/pm
+
+RUN apk update && apk add bash nodejs npm python3 python3-dev freetype-dev subversion
+RUN apk --no-cache --update-cache add gcc gfortran build-base wget libpng-dev openblas-dev
+
+RUN pip3 install --upgrade pip
+
+WORKDIR '/data/pm'
+
+RUN pip install pykg-config
+
+RUN pip install -r requirements.txt
+
+CMD python3 pollmaster.py