FROM python:3.11-slim

# Keep python fast and quiet, and pip lean
ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PIP_NO_CACHE_DIR=1

# System deps (ffmpeg for media, jq for scripts, poppler-utils for PDFs, curl for healthcheck)
RUN apt-get update && apt-get install -y --no-install-recommends \
    ffmpeg \
    curl \
    jq \
    poppler-utils \
 && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Upgrade pip first, then install deps
COPY requirements.txt .
RUN python -m pip install --upgrade pip \
 && pip install --no-cache-dir -r requirements.txt \
 && pip check || true

# App code
COPY app.py worker.py ./
RUN pip install --no-cache-dir gunicorn==22.0.0

# Basic container health check (relies on curl)
HEALTHCHECK --interval=30s --timeout=5s --retries=3 CMD curl -fsS http://127.0.0.1:8080/ || exit 1

EXPOSE 8080
CMD ["gunicorn", "-b", "0.0.0.0:8080", "app:app", "--workers", "2", "--threads", "4"]