FROM python:3.11.11-slim-bullseye

# Install system dependencies as root
RUN apt-get update -qq \
  && apt-get -qqq install --no-install-recommends -y \
     pkg-config gcc g++ git curl \
  && apt-get clean \
  && rm -rf /var/lib/apt/lists/*

# Create non-root user with specific UID/GID
# Using UID/GID 1000 which is common for the first user
RUN groupadd -r -g 1000 libretranslate \
  && useradd -r -u 1000 -g 1000 -m -d /home/libretranslate -s /bin/bash libretranslate

# Set working directory
WORKDIR /app

# Clone repository as root, then change ownership
RUN git clone https://github.com/LibreTranslate/LibreTranslate.git . \
  && chown -R libretranslate:libretranslate /app \
  && apt-get remove -y git \
  && apt-get autoremove -y \
  && apt-get clean \
  && rm -rf /var/lib/apt/lists/*

# Create necessary directories with proper permissions
RUN mkdir -p /app/db /app/logs /tmp/prometheus_data \
  && chown -R libretranslate:libretranslate /app /tmp/prometheus_data \
  && chmod 755 /app /app/db /app/logs /tmp/prometheus_data

# Switch to non-root user for all subsequent operations
USER libretranslate

# Create virtual environment as non-root user
RUN python -m venv venv \
  && ./venv/bin/pip install --upgrade pip wheel

# Install Python dependencies as non-root user
RUN ./venv/bin/pip install Babel==2.12.1 \
  && ./venv/bin/python scripts/compile_locales.py \
  && ./venv/bin/pip install torch==2.2.0 --extra-index-url https://download.pytorch.org/whl/cpu \
  && ./venv/bin/pip install "numpy<2" \
  && ./venv/bin/pip install -e . \
  && ./venv/bin/pip install gunicorn \
  && ./venv/bin/pip cache purge

# Create wsgi.py as non-root user
RUN echo 'from app.main import create_app\n\
\n\
def app(*args, **kwargs):\n\
    import argparse\n\
    parser = argparse.ArgumentParser()\n\
    import app.main as main\n\
    main.get_args(parser)\n\
    args = parser.parse_args([])\n\
    for k, v in kwargs.items():\n\
        setattr(args, k, v)\n\
    return create_app(args)' > /app/wsgi.py

# Set environment variables
ENV PROMETHEUS_MULTIPROC_DIR=/tmp/prometheus_data
ENV HOME=/home/libretranslate
ENV USER=libretranslate

# Expose port (as non-root, can only bind to ports > 1024)
EXPOSE 7860

# Health check running as non-root
HEALTHCHECK --interval=30s --timeout=3s --start-period=40s --retries=3 \
  CMD ./venv/bin/python -c "import urllib.request; urllib.request.urlopen('http://localhost:7860/languages').read()"

# Run gunicorn as non-root user
CMD ["./venv/bin/gunicorn", \
     "--workers", "3", \
     "--bind", "0.0.0.0:7860", \
     "--timeout", "300", \
     "--log-level", "info", \
     "--access-logfile", "-", \
     "--error-logfile", "-", \
     "wsgi:app"]