Nginx proxy docker swarm example

docker-stack.yml

version: "3.3"

volumes:
  proxy:

networks:
  proxy_network:
  backend_network: #For connection another stacks to proxy. Should be created manualy.
    external: true

services:
    nginx: #proxy itself. Facade of proxy network.
        image: nginx
        labels:
          - com.github.jrcs.letsencrypt_nginx_proxy_companion.nginx_proxy
        volumes:
          - proxy:/etc/nginx/conf.d
          - proxy:/etc/nginx/vhost.d
          - proxy:/usr/share/nginx/html
          - proxy:/etc/nginx/certs:ro
        ports:
          - 80:80
          - 443:443
        networks:
          - proxy_network

    nginx-gen:
        image: jwilder/docker-gen
        labels:
          - com.github.jrcs.letsencrypt_nginx_proxy_companion.docker_gen
        volumes:
          - proxy:/etc/nginx/conf.d
          - proxy:/etc/nginx/vhost.d
          - proxy:/usr/share/nginx/html
          - proxy:/etc/nginx/certs:ro
          - ./nginx.tmpl:/etc/docker-gen/templates/nginx.tmpl:ro
          - /var/run/docker.sock:/tmp/docker.sock:ro
        command: -notify-sighup nginx -watch -wait 5s:30s /etc/docker-gen/templates/nginx.tmpl /etc/nginx/conf.d/default.conf
        networks:
          - proxy_network

    nginx-letsencrypt:
        image: jrcs/letsencrypt-nginx-proxy-companion
        volumes:
          - proxy:/etc/nginx/conf.d
          - proxy:/etc/nginx/vhost.d
          - proxy:/usr/share/nginx/html
          - proxy:/etc/nginx/certs:rw
          - /var/run/docker.sock:/var/run/docker.sock:ro
        networks:
          - proxy_network

    demo: #Just for demo. Expecting than real apps will be at it's own stack but connected to this proxy throw backend_network.
        image: nginx:alpine
        networks:
          - proxy_network
        environment:
          - LETSENCRYPT_HOST=you-domain.com,demo.you-domain.com,registry.you-domain.com #yes, it have to be as list of all domains. And base have to be first.
          - LETSENCRYPT_EMAIL=me@you-mail-server.com
          - VIRTUAL_HOST=demo.you-domain.com

    registry: #Just for demo too. Expecting than real apps will be at it's own stack but connected to this proxy throw backend_network.
        image: registry
        networks:
          - proxy_network
        environment:
          - LETSENCRYPT_HOST=you-domain.com,demo.you-domain.com,registry.you-domain.com #yes, it have to be as list of all domains. And base have to be first.
          - LETSENCRYPT_EMAIL=me@you-mail-server.com
          - VIRTUAL_HOST=registry.you-domain.com