add Dockerfile for automatic container creation

Dockerfile

@@ -0,0 +1,11 @@
+FROM python:3.11-slim-bullseye
+
+WORKDIR /app
+
+COPY ./requirements.txt /app/requirements.txt
+
+RUN python -m pip install -r requirements.txt
+
+COPY ./app/ /app/app/
+
+CMD flask run -h 0.0.0.0 -p $PORT