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backend/Dockerfile

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+FROM python:3.11-slim
+
+WORKDIR /app
+
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1 \
+    PYTHONPATH=/app
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    git \
+    libpq-dev \
+    gcc \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY requirements.txt /app/requirements.txt
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY backend /app/backend
+COPY backend/alembic.ini /app/alembic.ini
+
+CMD ["sh", "-c", "alembic upgrade head && uvicorn app.api.main:app --host 0.0.0.0 --port 8000"]