FROM python:3.10-slim

# Prevent Python from buffering stdout/stderr
ENV PYTHONUNBUFFERED=1

# Set working directory
WORKDIR /app

# Install system dependencies (required for opencv, mediapipe, audio file handling)
RUN apt-get update && apt-get install -y \
    ffmpeg \
    libglib2.0-0 \
    libsm6 \
    libxext6 \
    libxrender-dev \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements first (better layer caching)
COPY requirements.txt .

# Upgrade pip and install Python dependencies
RUN pip install --upgrade pip && \
    pip install --no-cache-dir -r requirements.txt

# Copy rest of the application
COPY . .

# Expose Hugging Face required port
EXPOSE 7860

# Start the Flask app
CMD ["python", "app.py"]