added dockerfile

Dockerfile

@@ -0,0 +1,18 @@
+# Use an official Python runtime as a parent image
+FROM python:3.9-slim-buster
+
+# Set the working directory to /app
+WORKDIR /app
+
+# Copy the current directory contents into the container at /app
+COPY . /app
+
+# Install any needed packages specified in requirements.txt
+RUN pip3 install -r requirements.txt
+
+# Make port 80 available to the world outside this container
+EXPOSE 80
+
+# Run the Gunicorn server with 4 worker processes
+CMD ["gunicorn", "--bind", "0.0.0.0:80", "--workers", "4", "app:app"]
+