Add multi-architecture support (AMD64 and ARM64) for Docker builds

Co-authored-by: johndoe6345789 <224850594+johndoe6345789@users.noreply.github.com>

backend/Dockerfile

@@ -1,6 +1,17 @@
 FROM python:3.11-slim
 
-COPY require
+WORKDIR /app
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY app.py .
+
+RUN mkdir -p /app/data
+
+EXPOSE 5000
+
+CMD ["python", "app.py"]