Dockerfile.backend

# ============================================
# TEST: Can we build without gcc/g++?
# This will fail if any package needs compilation
# ============================================
FROM python:3.11-slim AS builder

ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PIP_NO_CACHE_DIR=1 \
    PIP_DISABLE_PIP_VERSION_CHECK=1

WORKDIR /build

# NO gcc/g++ installation - testing if wheels are enough
# (only install minimal utils if needed)

# Copy only files needed for package installation
COPY pyproject.toml /build/
COPY src /build/src

# Create virtual environment and install dependencies
RUN python -m venv /opt/venv
ENV PATH="/opt/venv/bin:$PATH"

# Upgrade pip and install (will fail if source compilation needed)
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir --only-binary=:all: . || \
    (echo "ERROR: Some packages don't have wheels, need compilers" && exit 1)

# Install additional runtime dependencies
RUN pip install --no-cache-dir --only-binary=:all: \
    pydantic-settings \
    sqlalchemy \
    alembic || \
    (echo "ERROR: Runtime deps need compilers" && exit 1)

# SAFE cleanup
RUN find /opt/venv -type d -name "tests" -o -name "test" -o -name "__pycache__" | xargs rm -rf 2>/dev/null || true && \
    find /opt/venv -type f \( -name "*.pyc" -o -name "*.pyo" \) -delete && \
    find /opt/venv -type f \( -name "*.c" -o -name "*.pxd" -o -name "*.pyd" \) -delete

# ============================================
# Stage 2: Runtime - Minimal production image
# ============================================
FROM python:3.11-slim

ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PIP_NO_CACHE_DIR=1

WORKDIR /app

# Install ONLY runtime system dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    ca-certificates \
    curl \
    sqlite3 \
    poppler-utils \
  && rm -rf /var/lib/apt/lists/* \
  && rm -rf /usr/share/doc/* \
  && rm -rf /usr/share/man/*

# Copy virtual environment from builder stage
COPY --from=builder /opt/venv /opt/venv
ENV PATH="/opt/venv/bin:$PATH"

# Copy only runtime-required application files
COPY backend /app/backend
COPY config /app/config

# Create data directory structure
RUN mkdir -p /app/backend/data/assets /app/backend/data/jobs

# Set working directory to backend app
WORKDIR /app/backend

# Copy migration entrypoint
COPY backend/docker-entrypoint.sh /docker-entrypoint.sh
RUN chmod +x /docker-entrypoint.sh

# Environment for lightweight cleanup
ENV EINK_CLEANUP_TTL_DAYS=14

EXPOSE 8000

# Run migrations via entrypoint, then start server
ENTRYPOINT ["/docker-entrypoint.sh"]
CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]