FROM python:3.10-slim

WORKDIR /app
ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PIP_NO_CACHE_DIR=1 \
    PIP_DISABLE_PIP_VERSION_CHECK=1 \
    PIP_ROOT_USER_ACTION=ignore

# Base image already bundles PyTorch + deps so we install only the minimal OS tools we still need
RUN apt-get update && apt-get install -y --no-install-recommends \
        ffmpeg \
        libsndfile1 \
    && rm -rf /var/lib/apt/lists/*

# Copy only dependency manifests first for better Docker layer caching
COPY requirements.txt ./
RUN pip install --no-cache-dir --upgrade pip setuptools wheel \
 && pip install --no-cache-dir -r requirements.txt

COPY . .

# Gradio defaults to 7860; change if you override `demo.launch(server_port=...)`
ENV PORT=7860
EXPOSE 7860

CMD ["python", "app.py"]