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Dockerfile

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+# Lightweight Python base
+FROM python:3.12-slim
+
+ENV PYTHONUNBUFFERED=1 \
+    PYTHONDONTWRITEBYTECODE=1 \
+    PIP_DISABLE_PIP_VERSION_CHECK=1 \
+    PIP_ROOT_USER_ACTION=ignore
+
+# Install only essential system dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+      ca-certificates curl gnupg tzdata \
+ && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+
+# --- Python dependencies ---
+COPY requirements.txt .
+RUN --mount=type=cache,target=/root/.cache/pip \
+    pip install --no-cache-dir -r requirements.txt 
+
+# --- Copy app code ---
+COPY app/ /app/
+
+# Stay root or not
+USER root
+
+ENTRYPOINT ["python", "/app/main.py"]