FROM python:3.9-slim

WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y \
    build-essential \
    curl \
    git \
    libgl1-mesa-glx \
    libglib2.0-0 \
    libsm6 \
    libxext6 \
    && rm -rf /var/lib/apt/lists/*

# Install Python requirements first for better caching
COPY requirements.txt ./
RUN pip3 install --no-cache-dir -r requirements.txt

# --- CORRECTED FILE COPYING ---
# Copy the entire 'src' directory, which contains both the app and the model
COPY src/ ./src/
# The separate 'COPY rssi_last.pt ./' line is now removed as it's not needed.

# Create and use a non-root user to solve Permission Errors
RUN useradd -ms /bin/bash -d /app appuser
RUN chown -R appuser:appuser /app
USER appuser

EXPOSE 8501

HEALTHCHECK CMD curl --fail http://localhost:8501/_stcore/health

# The entrypoint remains the same
ENTRYPOINT ["streamlit", "run", "src/streamlit_app.py", "--server.port=8501", "--server.address=0.0.0.0", "--server.enableXsrfProtection=false"]