---
version: "3.4"

services:
  redirect:
    image: caddy:2
    volumes:
      - ./Caddyfile:/etc/caddy/Caddyfile:ro,z
    labels:
      - "traefik.enable=true"
      - "traefik.http.routers.caddyredir.rule={{ redirect.hosts | map(attribute='from') | map('regex_replace', '^(.*)$', 'Host(`\\1`)') | join(' || ') }}"
      - "traefik.http.routers.caddyredir.entryPoints=websecure"
      - "traefik.http.services.caddyredir.loadbalancer.server.port=80"
    restart: always
...