QUESTION:

Where should we declare those new UI Environment Variables? (from the readme)

ANSWER:

Add the new UI Environment Variables to docker-compose.yml (on the server). Like this:

  lemmy-ui:
    image: ggg/ui2:latest
    ports:
      - "127.0.0.1:23587:1234"
    restart: always
    environment:
      - LEMMY_INTERNAL_HOST=lemmy:8536
      - LEMMY_EXTERNAL_HOST=ggg.quest
      - LEMMY_HTTPS=true
      - LEMMY_UI_LEMMY_EXTERNAL_HOST=ggg.com
      - LEMMY_UI_LEMMY_INTERNAL_HOST=lemmy:8536
      - LEMMY_UI_HTTPS=true
    depends_on:
      - lemmy