Added docker container file

Dockerfile

@@ -0,0 +1,17 @@
+FROM python:3.8-alpine as base
+
+FROM base as builder
+RUN mkdir /install
+WORKDIR /install
+COPY requirements.txt /requirements.txt
+RUN pip install --install-option="--prefix=/install" -r /requirements.txt
+
+FROM base
+COPY --from=builder /install /usr/local
+RUN addgroup -S appgroup && adduser -S appuser -G appgroup
+
+WORKDIR /home/appuser
+USER appuser
+
+COPY ./
+ENTRYPOINT ["python", "./genspells.py"]