Minimal dual reverse proxy setup with Caddy Servers

Caddyfile-beta2

{
  auto_https off
}

:80 {
  root * /site
  file_server
}

Caddyfile-beta3

{
  auto_https off
}

:80 {
  root * /site
  file_server
}

Caddyfile-ingress

http://SLD1.TLD {
  reverse_proxy caddy-beta2:80
}

http://SLD2.TLD {
  reverse_proxy caddy-beta3:80
}

docker-compose.yml

version: '3.7'
services:
  caddy-ingress:
    image: caddy:2-alpine
    volumes:
      - ./Caddyfile-ingress:/etc/caddy/Caddyfile
    ports:
      - "8001:80"
    networks:
      - caddy-network

  caddy-beta2:
    image: caddy:2-alpine
    volumes:
      - ./Caddyfile-beta2:/etc/caddy/Caddyfile
      - ./site-beta2:/site
    networks:
      - caddy-network

  caddy-beta3:
    image: caddy:2-alpine
    volumes:
      - ./Caddyfile-beta3:/etc/caddy/Caddyfile
      - ./site-beta3:/site
    networks:
      - caddy-network

networks:
  caddy-network:
    driver: bridge