FROM nvidia/cuda:12.1.1-cudnn8-runtime-ubuntu22.04

ENV DEBIAN_FRONTEND=noninteractive
ENV PYTHONUNBUFFERED=1

# System deps: OpenCV headless needs libgl, ffmpeg for video decoding,
# build-essential for pycocotools compilation
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
        python3 python3-pip python3-dev \
        libgl1 libglib2.0-0 ffmpeg build-essential && \
    rm -rf /var/lib/apt/lists/*

RUN ln -sf /usr/bin/python3 /usr/bin/python

WORKDIR /app

# Install PyTorch with CUDA 12.1
RUN pip install --no-cache-dir \
    torch==2.5.1 torchvision==0.20.1 \
    --index-url https://download.pytorch.org/whl/cu121

COPY requirements.txt .
# Install videoseal without deps to avoid decord (no ARM64 wheels).
RUN pip install --no-cache-dir -r requirements.txt && \
    pip install --no-cache-dir --no-deps videoseal==1.0.1 && \
    apt-get purge -y --auto-remove build-essential && \
    rm -rf /var/lib/apt/lists/*

COPY app.py .
COPY configs/ configs/

ENV MODEL_PORT=9004
ENV PRELOAD_MODEL=false
ENV MODEL_TIMEOUT=600
EXPOSE 9004

# Pre-create cache dirs that videoseal needs (before dropping root)
RUN mkdir -p /app/ckpts /app/.cache
COPY ckpts/ /app/ckpts/
RUN adduser --disabled-password --gecos "" appuser && \
    chown -R appuser:appuser /app/ckpts /app/.cache
USER appuser

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