Dockerized the application.

backend/Dockerfile

@@ -0,0 +1,27 @@
+FROM python:3.13-slim
+
+RUN apt-get update && apt-get install -y \
+    gcc \
+    g++ \
+    python3-dev \
+    curl \
+    libmagic1 \
+    build-essential \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy the application code
+COPY . .
+
+RUN adduser --disabled-password --no-create-home appuser
+USER appuser
+
+ENV PYTHONUNBUFFERED=1
+
+EXPOSE 5000
+
+CMD ["python", "app.py"]