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# backend/Dockerfile.pip
# === BUILD STAGE ===
FROM python:3.10-slim AS build

ENV PIP_NO_CACHE_DIR=1 \
    PYTHONUNBUFFERED=1 \
    PATH="/home/user/.local/bin:$PATH"

# Install system dependencies for building
RUN apt-get update && apt-get install -y \
    build-essential \
    libjpeg-dev \
    zlib1g-dev \
    libpng-dev \
    libffi-dev \
    && rm -rf /var/lib/apt/lists/*

# Create user
RUN useradd -m -u 1000 user

USER user
WORKDIR /app

# Copy requirements file
COPY --chown=user requirements.txt ./

# Install dependencies using PIP
RUN pip install --no-cache-dir --user -r requirements.txt

# === FINAL STAGE ===
FROM python:3.10-slim

# Install runtime dependencies only
RUN apt-get update && apt-get install -y \
    libjpeg-dev \
    zlib1g-dev \
    libpng-dev \
    libffi-dev \
    curl \
    && apt-get autoremove -y \
    && apt-get clean -y \
    && rm -rf /var/lib/apt/lists/*

# Create user
RUN useradd -m -u 1000 user

USER user

ENV PATH="/home/user/.local/bin:$PATH" \
    PYTHONUNBUFFERED=1 \
    PIP_NO_CACHE_DIR=1

WORKDIR /app

# Copy installed packages from builder
COPY --from=build /home/user/.local /home/user/.local

# Copy application code
COPY --chown=user . .

EXPOSE 7860

# Health check
HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:7860/healthcheck || exit 1

# Production command
CMD ["uvicorn", "src.main:app", "--host", "0.0.0.0", "--port", "7860"]