FROM nvidia/cuda:12.1.0-devel-ubuntu22.04

# Set environment variables
ENV DEBIAN_FRONTEND=noninteractive \
    PYTHONUNBUFFERED=1 \
    PYTHON_VERSION=3.10 \
    TORCHVISION_DISABLE_META_REGISTRATIONS=1

# Install system dependencies
RUN apt-get update && apt-get install -y \
    python${PYTHON_VERSION} \
    python${PYTHON_VERSION}-dev \
    python3-pip \
    git \
    git-lfs \
    ffmpeg \
    build-essential \
    libsndfile1 \
    ninja-build \
    wget \
    && rm -rf /var/lib/apt/lists/* \
    && git lfs install

# Set Python 3.10 as default
RUN update-alternatives --install /usr/bin/python python /usr/bin/python${PYTHON_VERSION} 1 && \
    update-alternatives --install /usr/bin/python3 python3 /usr/bin/python${PYTHON_VERSION} 1

# Upgrade pip
RUN python -m pip install --no-cache-dir --upgrade pip setuptools wheel

# Install PyTorch 2.5.1+ FIRST (required for xfuser's torch.distributed.tensor.experimental)
RUN pip install --no-cache-dir \
    torch==2.5.1 \
    torchvision==0.20.1 \
    torchaudio==2.5.1 \
    --index-url https://download.pytorch.org/whl/cu121

# Try to install flash-attn, but don't fail if it doesn't work
RUN pip install --no-cache-dir flash-attn==2.7.4.post1 --no-build-isolation || \
    echo "Warning: flash-attn installation failed, continuing without it (will use slower attention)"

# Set working directory
WORKDIR /app

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

# Install remaining requirements (skip torch, torchvision, torchaudio, flash-attn as they're already installed)
RUN pip install --no-cache-dir -r requirements.txt || \
    (echo "Some packages failed to install" && pip install --no-cache-dir -r requirements.txt --ignore-installed)

# Copy application files
COPY . .

# Create user directory and set permissions
RUN useradd -m -u 1000 user && \
    chown -R user:user /app && \
    mkdir -p /home/user/.cache /home/user/.local && \
    chown -R user:user /home/user

# Switch to non-root user
USER user

# Set environment for HuggingFace
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH \
    PYTHONPATH=/app \
    HF_HOME=/home/user/.cache/huggingface

# Expose port for Gradio
EXPOSE 7860

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