feat: Update reqs and add Dockerfile

Dockerfile

@@ -0,0 +1,20 @@
+FROM python:3.13-slim
+
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1
+
+WORKDIR /app
+
+RUN useradd --create-home --home-dir /home/appuser --shell /bin/bash appuser
+
+COPY requirements.txt ./
+RUN pip install --no-cache-dir --upgrade pip \
+    && pip install --no-cache-dir -r requirements.txt
+
+COPY --chown=appuser:appuser . .
+
+USER appuser
+
+EXPOSE 5000
+
+CMD ["gunicorn", "--bind", "0.0.0.0:5000", "--workers", "2", "--threads", "4", "--timeout", "60", "main:app"]