Dockerfile

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

WORKDIR /app

# Install system dependencies for psycopg/asyncpg compilation
RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc \
    libpq-dev \
    && rm -rf /var/lib/apt/lists/*

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

# =================================
# Stage 2: Production image
# =================================
FROM python:3.12-slim

WORKDIR /app

# Runtime dependencies only
RUN apt-get update && apt-get install -y --no-install-recommends \
    libpq5 \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Copy installed Python packages from builder
COPY --from=builder /install /usr/local

# Copy application code
COPY . .

# Create non-root user
RUN addgroup --system dail && adduser --system --ingroup dail dail
USER dail

# Health check
HEALTHCHECK --interval=30s --timeout=5s --retries=3 \
    CMD curl -f http://localhost:8000/api/v1/health || exit 1

EXPOSE 8000

CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000", "--workers", "4"]