---
version: "3.4"

services:
  lounge:
    image: thelounge/thelounge:4
    volumes:
      - data:/var/opt/thelounge
    labels:
      - "traefik.enable=true"
      - "traefik.http.routers.thelounge.rule=Host(`lounge.tobiasmanske.de`)"
      - "traefik.http.routers.thelounge.entryPoints=websecure"
      - "traefik.http.services.thelounge.loadbalancer.server.port=9000"
    restart: always

volumes:
  data:
...