Restored single service Flask project

Signed-off-by: Ajeet Singh Raina <ajeetraina@gmail.com>

flask/app/Dockerfile

@@ -0,0 +1,7 @@
+FROM python:3.7-alpine 
+WORKDIR /app 
+COPY requirements.txt /app
+RUN pip3 install -r requirements.txt --no-cache-dir
+COPY . /app 
+ENTRYPOINT ["python3"] 
+CMD ["app.py"]