Added dockerfile

Author: Polymath-Saksh

.Dockerfile

@@ -0,0 +1,9 @@
+FROM python:3.12-slim
+WORKDIR /app
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+COPY . .
+RUN python manage.py collectstatic --noinput
+ENV DJANGO_SETTINGS_MODULE=DR_Detection.settings \
+    PYTHONUNBUFFERED=1
+CMD ["gunicorn", "DR_Detection.wsgi:application", "--bind", "0.0.0.0:8000", "--timeout", "120"]