FROM python:3.11-slim

WORKDIR /app

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

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

# Copy source code
COPY . .

# Jalankan sebagai user non-root
RUN useradd --create-home --uid 10001 appuser \
    && chown -R appuser:appuser /app
USER appuser

EXPOSE 8000

HEALTHCHECK --interval=30s --timeout=5s --start-period=20s --retries=3 \
    CMD curl -fsS http://127.0.0.1:8000/health || exit 1

# Gunicorn + UvicornWorker. Pakai 1 worker: state EMA & cache radio map bersifat
# in-memory per worker, jadi 1 worker menjaga konsistensi pada VPS 1 vCPU.
# (Untuk multi-worker, pindahkan EMA & cache ke Redis terlebih dahulu.)
CMD ["gunicorn", "main:app", \
     "-k", "uvicorn.workers.UvicornWorker", \
     "-w", "1", \
     "-b", "0.0.0.0:8000", \
     "--timeout", "60", \
     "--access-logfile", "-"]
