Nginx-proxy-manager multiple networking docker-compose.yml

docker-compose-portainer.yml

version: '3'
services:
    portainer:
        image: portainer/portainer-ce:latest
        container_name: my_portainer
        volumes:
            - data:/data
            - /var/run/docker.sock:/var/run/docker.sock
        restart: always
        networks:
            - proxy

networks:
    proxy:
        name: proxy-net-external
        external: true
volumes:
    data:

docker-compose-proxy.yml

version: '3'
services:
  app:
    image: 'jc21/nginx-proxy-manager:latest'
    restart: always
    ports:
      - '80:80'
      - '81:81'
      - '443:443'
    volumes:
      - ./data:/data
      - ./letsencrypt:/etc/letsencrypt
    networks:
      - proxy

networks:
  proxy:
    name: proxy-net-external
    external: false

docker-compose-wordpress.yml

version: '3'

services:
    wordpress1:
        image: wordpress:latest
        container_name: wordpress-1
        restart: always
        environment:
            WORDPRESS_DB_HOST: db
            WORDPRESS_DB_USER: wpuser
            WORDPRESS_DB_PASSWORD: wppassword
            WORDPRESS_DB_NAME: wpdb
            WORDPRESS_TABLE_PREFIX: wp1_
        volumes:
            - wordpress1_data:/var/www/html
        networks:
            - proxy-net-external
            - internal1

    wordpress2:
        image: wordpress:latest
        container_name: wordpress-2
        restart: always
        environment:
            WORDPRESS_DB_HOST: db
            WORDPRESS_DB_USER: wpuser
            WORDPRESS_DB_PASSWORD: wppassword
            WORDPRESS_DB_NAME: wpdb
            WORDPRESS_TABLE_PREFIX: wp2_
        volumes:
            - wordpress2_data:/var/www/html
        networks:
            - proxy-net-external
            - internal2

    db:
        image: mariadb:latest
        container_name: wordpress-db
        restart: always
        environment:
            MYSQL_ROOT_PASSWORD: wppassword
            MYSQL_DATABASE: wpdb
            MYSQL_USER: wpuser
            MYSQL_PASSWORD: wppassword
        volumes:
            - wordpress_db_data:/var/lib/mysql
        networks:
            - internal1
            - internal2

    phpmyadmin:
        image: phpmyadmin/phpmyadmin
        container_name: wordpress-phpmyadmin
        restart: always
        environment:
            PMA_HOST: db
            MYSQL_ROOT_PASSWORD: wppassword
        networks:
            - internal1
            - internal2
            - proxy-net-external

networks:
    internal1:
        driver: bridge
    internal2:
        driver: bridge
    proxy-net-external:
        external: true

volumes:
    wordpress1_data:
    wordpress2_data:
    wordpress_db_data: