FROM python:3.9-alpine AS builder

WORKDIR /app

# Install build dependencies (needed for some Python packages)
RUN apk add --no-cache gcc musl-dev linux-headers

COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

COPY . .

FROM python:3.9-alpine

WORKDIR /app

# Install runtime dependencies if needed (uncomment if your app needs them)
# RUN apk add --no-cache libstdc++

COPY --from=builder /app /app

CMD ["python", "app.py"]