# GPU-accelerated worker — requires NVIDIA Container Toolkit on the host
# Build: docker compose -f docker-compose.yml -f docker-compose.gpu.yml build worker
#
# Prerequisites:
#   - NVIDIA drivers installed on host
#   - NVIDIA Container Toolkit: https://docs.nvidia.com/datacenter/cloud-native/container-toolkit/
#   - GPU capability in docker-compose.gpu.yml enables NVENC access

FROM nvcr.io/nvidia/cuda:12.3.1-base-ubuntu22.04

# Install Node.js 20, ffmpeg (Ubuntu's ffmpeg includes h264_nvenc/hevc_nvenc),
# and yt-dlp for the YouTube importer.
#
# yt-dlp is NOT installed from apt: Ubuntu 22.04's package is pinned to a 2022
# release, which YouTube has long since broken (extraction fails). yt-dlp must
# track YouTube's frequent changes, so we pull the latest self-contained
# release binary at build time. /usr/local/bin precedes /usr/bin on PATH, so
# `yt-dlp` resolves to this one. Rebuild the worker image to refresh it.
RUN apt-get update && apt-get install -y --no-install-recommends \
      curl ca-certificates ffmpeg python3 \
    && curl -fsSL https://deb.nodesource.com/setup_20.x | bash - \
    && apt-get install -y --no-install-recommends nodejs \
    && curl -fsSL https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp_linux \
         -o /usr/local/bin/yt-dlp \
    && chmod a+rx /usr/local/bin/yt-dlp \
    && apt-get clean && rm -rf /var/lib/apt/lists/*

WORKDIR /app
COPY package*.json ./
RUN npm install --omit=dev
COPY src ./src

CMD ["node", "src/index.js"]