Mulitple Docker Compose: fetch fails with error 'getaddrinfo EAI_AGAIN' - node.js

Question

I have a project, where frontend and backend are separated. I've managed to connect those apps via docker network. But now I'm stuck with error from frontend app
FetchError: request to http://nginx:80/Api/Pages/GetHeaderMenuElements/ failed, reason: getaddrinfo EAI_AGAIN nginx
docker-compose.yml for frontend:
version: '3.5'
services:
next:
container_name: ${APP_NAME:?err}-next
#restart: 'always'
#ports:
# - "41000:4000"
build:
context: .
dockerfile: Dockerfile
command: tail -F anything
networks:
default:
external:
name: 'custom-net'
docker-compose.yml for backend:
version: '3'
services:
#some services were removed
php:
restart: always
links:
- mariadb
- memcache
- mailer
build:
context: .
dockerfile: ./docker/php.Dockerfile
container_name: ${APP_NAME:?err}-php
volumes:
- './etc/php/php.ini-production:/usr/local/etc/php/php.ini'
- './www/:/var/www/html'
nginx:
image: nginx:latest
container_name: ${APP_NAME:?err}-nginx
restart: always
ports:
- '11000:80'
- '44443:443'
links:
- 'php'
volumes:
- './www:/var/www/html'
- './config/nginx/fastcgi.conf:/etc/nginx/fastcgi.conf'
- './config/nginx/nginx.conf:/etc/nginx/nginx.conf'
- './config/nginx/snippets/:/etc/nginx/snippets/'
- './config/nginx/conf:/etc/nginx/conf.d/'
networks:
default:
external:
name: 'custom-net'
I'm able to reach nginx from next container via wget.
So my question is: how can I connect to nginx?
I'm using docker for windows