FROM node:20-bookworm-slim

ENV TZ=Asia/Shanghai \
  NPM_CONFIG_REGISTRY=https://registry.npmmirror.com
RUN echo $TZ > /etc/timezone && \
  ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && \
  dpkg-reconfigure -f noninteractive tzdata

# ffmpeg 用于向 Nginx-RTMP 循环推流
RUN apt-get update && apt-get install -y --no-install-recommends ffmpeg && \
  rm -rf /var/lib/apt/lists/*

WORKDIR /simulator

COPY simulator/package.json ./
RUN npm config set registry https://registry.npmmirror.com && \
  npm install --omit=dev

COPY simulator/simulator.js ./
COPY simulator/assets /assets

ENV ASSETS_DIR=/assets \
  FFMPEG_BIN=ffmpeg

CMD ["node", "simulator.js"]