Dockerfile

# Stage 1: Build dependencies
FROM python:3.12-slim AS builder

WORKDIR /app

RUN apt-get update \
    && apt-get install -y --no-install-recommends build-essential curl \
    && rm -rf /var/lib/apt/lists/*

COPY requirements.txt .
RUN pip install --upgrade pip \
    && pip install --no-cache-dir --user -r requirements.txt

# Stage 2: Final minimal runner image
FROM python:3.12-slim AS runner

WORKDIR /app

ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PATH=/root/.local/bin:$PATH

# Copy pre-compiled dependencies
COPY --from=builder /root/.local /root/.local

# Copy application code
COPY . .

EXPOSE 8000

CMD ["sh", "-c", "exec uvicorn app.main:app --host 0.0.0.0 --port ${PORT:-8000}"]