Finish remaining code

Dockerfile

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+FROM docker.io/library/python:3.14-slim
+
+RUN groupadd -r appuser && useradd -r -g appuser appuser
+
+WORKDIR /app
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY app/ ./app/
+
+USER appuser
+
+EXPOSE 5000
+
+CMD ["gunicorn", "-b", "0.0.0.0:5000", "app.server:app"]