谢谢你的提醒，我已经搞定了。

version: "3.9"
services:
  main:
    image: b3log/siyuan
    command: [--workspace=/siyuan/workspace/, --accessAuthCode=888888]
    user: '1000:1000'
    ports:
      - 6806:6806
    volumes:
      - /volume1/docker/siyuan/workspace:/siyuan/workspace
    restart: unless-stopped
    environment:
      # A list of time zone identifiers can be found at https://en.wikipedia.org/wiki/List_of_tz_database_time_zones
      - TZ=Asia/Shanghai

谢谢你的回答！你这个说明是最新版的吗？新版的思源好像已经从/siyuan/workspace 变成了/home/siyuan 了。