docker nginx proxy: multi sites

docker-compose.yml

version: '3'

services:
  nginx-proxy:
    image: jwilder/nginx-proxy
    restart: always
    ports:
      - "80:80"
    volumes:
      - /var/run/docker.sock:/tmp/docker.sock:ro

  v1:
    image: nginx
    restart: always
    expose:
      - "80"
    volumes:
      - ./v1:/usr/share/nginx/html:ro
    environment:
      - VIRTUAL_HOST=arcux.local
  v2:
    image: nginx
    restart: always
    expose:
      - "80"
    volumes:
      - ./v2:/usr/share/nginx/html:ro
    environment:
      - VIRTUAL_HOST=v1.arcux.local
  v3:
    image: nginx
    restart: always
    expose:
      - "80"
    volumes:
      - ./v3:/usr/share/nginx/html:ro
    environment:
      - VIRTUAL_HOST=v2.arcux.local