dockerfile

FROM python:3.11-slim

# Set environment variables
ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PIP_NO_CACHE_DIR=1 \
    PIP_DISABLE_PIP_VERSION_CHECK=1 \
    FLASK_APP=server.py

# Install system dependencies including curl for health checks
RUN apt-get update \
    && apt-get install -y --no-install-recommends \
        gcc \
        python3-dev \
        curl \
    && rm -rf /var/lib/apt/lists/*

# Set work directory
WORKDIR /app

# Copy requirements first for better caching
COPY requirements.txt .

# Install Python dependencies
RUN pip install --no-cache-dir -r requirements.txt

# Copy application code
COPY server.py .

# Create necessary directories (running as root, so no permission issues)
RUN mkdir -p downloads data

# Expose port (matching your Flask app's port 5000, but we'll map it to 8000 in Gunicorn)
EXPOSE 8000

# Health check using your existing /api/health endpoint
HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:8000/api/health || exit 1

# Run with Gunicorn as root, using server:app since your file is server.py
CMD ["gunicorn", "--bind", "0.0.0.0:8000", "--workers", "4", "--timeout", "60", "--max-requests", "1000", "server:app"]