FROM pytorch/pytorch:2.1.0-cuda12.1-cudnn8-runtime

ENV GRADIO_SERVER_PORT=7860
ENV GRADIO_SERVER_NAME="0.0.0.0"
ENV PYTHONUNBUFFERED=1
ENV PYTHONDONTWRITEBYTECODE=1
ENV HF_HOME=/app/.cache/huggingface

# Install required system libraries
RUN apt-get update && apt-get install -y \
    git \
    build-essential \
    gfortran \
    libopenblas-dev \
    liblapack-dev \
    libatlas-base-dev \
    libjpeg-dev \
    libpng-dev \
    libffi-dev \
    zlib1g-dev \
    && rm -rf /var/lib/apt/lists/*

# Create mount point and set permissions for persistent storage
RUN mkdir -p /mnt && \
    chown -R 1000:1000 /mnt && \
    chmod 755 /mnt
VOLUME /mnt

WORKDIR /opt/app

# Copy requirements first for better caching
COPY requirements.txt requirements.txt

# Upgrade pip & install Python dependencies
RUN pip install --upgrade pip setuptools wheel && \
    pip install -r requirements.txt

# Create non-root user for better security
RUN useradd -m -u 1000 appuser && \
    mkdir -p /app/.cache/huggingface && \
    mkdir -p /tmp/gradio_cache && \
    mkdir -p /app/temp_audio && \
    chown -R appuser:appuser /app && \
    chown -R appuser:appuser /tmp/gradio_cache

USER appuser

# Copy application files
COPY app.py .
COPY public/ /opt/app/public/

# Run Gradio app
CMD ["python", "app.py"]