FROM python:3.9-slim

# Set environment variables
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1
ENV PORT=7860

# Install system dependencies as root
RUN apt-get update && apt-get install -y \
    build-essential \
    libsndfile1 \
    ffmpeg \
    && rm -rf /var/lib/apt/lists/*

# Create a non-root user
RUN useradd -m -u 1000 user

# Switch to the non-root user
USER user
ENV PATH="/home/user/.local/bin:$PATH"

WORKDIR /app

# Install Python dependencies
COPY --chown=user:users requirements.txt /app/requirements.txt
RUN pip install --no-cache-dir --upgrade pip && pip install --no-cache-dir -r requirements.txt

# Copy the rest of the project files
COPY --chown=user:users . /app

# Ensure outputs and temp directories exist
RUN mkdir -p outputs temp

# Expose the application port
EXPOSE 7860

# Run the application
CMD ["python", "app.py"]