FROM python:3.10-slim

ENV DEBIAN_FRONTEND=noninteractive

# System packages required for KoNLPy (Java) and MeCab tokenizer
RUN apt-get update \
    && apt-get install -y --no-install-recommends \
        build-essential \
        default-jdk \
        mecab \
        libmecab-dev \
        mecab-ipadic-utf8 \
        python3-dev \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

# Create non-root user (UID 1000) recommended for Spaces Dev Mode
RUN useradd -m -u 1000 user

ENV HOME=/home/user \
    PATH="/home/user/.local/bin:$PATH" \
    HF_HOME=/home/user/.cache/huggingface

WORKDIR ${HOME}/app

# Install Python dependencies
COPY --chown=user:user requirements.txt ./
RUN pip install --upgrade pip \
    && pip install --no-cache-dir -r requirements.txt

# Copy application source and artifacts with correct ownership
COPY --chown=user:user . .

USER user

ENV PYTHONPATH=${HOME}/app \
    PORT=7860

EXPOSE 7860

# Gunicorn respects the PORT provided by Hugging Face Spaces.
CMD ["sh", "-c", "gunicorn --bind 0.0.0.0:${PORT:-7860} --workers ${GUNICORN_WORKERS:-2} wsgi:application"]