# Imagem única para Streamlit — pronta para Docker Swarm.
# Build: docker build -t pdf-toolkit-web:1.0.0 -f Dockerfile.web .
FROM python:3.12-slim

WORKDIR /app

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

# wget para healthcheck do Swarm (CMD-SHELL no docker-compose.yaml de produção)
RUN apt-get update && apt-get install -y --no-install-recommends \
    wget \
    && rm -rf /var/lib/apt/lists/*

COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

COPY . .

EXPOSE 8550

HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
    CMD python -c "import http.client; conn=http.client.HTTPConnection('localhost:8550'); conn.request('GET','/'); r=conn.getresponse(); exit(0 if r.status==200 else 1)"

CMD ["streamlit", "run", "app.py", "--server.port", "8550", "--server.address", "0.0.0.0", "--server.headless", "true"]