How to configure docker and nginx so that the API works on next.js?

Question

Nginx

Good afternoon! I decided to try docker for my project. Project on next.js I
use docker-compose. Everything is fine until I add a container with nginx to the project.

The browser gives an error -

Access to XMLHttpRequest at ' localhost:3000/api/categories ' from origin ' surgut.expert.local ' has been blocked by CORS

I change the next.js settings to change the API address to surgut.expert.local/api , then it gives an error

Error: connect ECONNREFUSED 127.0.0.1:80

docker-compose settings:

version: '3'

services:
  next:
    build: ./next
    container_name: surgut-expert-next
    command: npm run dev
    volumes:
      - ./next:/usr/src/app
    restart: unless-stopped
    ports:
       - "3000:3000"
    networks:
      - surgut-expert-network

  nginx:
    image: nginx:stable-alpine
    container_name: surgut-expert-nginx
    ports:
      - "80:80"
    volumes:
      - ./nginx/nginx.conf.dev:/etc/nginx/conf.d/nginx.conf
    depends_on:
      - next
      - phpmyadmin
      - db
    networks:
      - surgut-expert-network

  db:
    image: mysql
    container_name: surgut-expert-db
    volumes:
      - dbdata:/var/lib/mysql
    restart: always
    ports:
      - "3036:3036"
    environment:
      MYSQL_ROOT_PASSWORD: root
      MYSQL_DATABASE: surgut_expert
    networks:
      - surgut-expert-network

  phpmyadmin:
    image: phpmyadmin
    container_name: surgut-expert-phpmyadmin
    restart: always
    ports:
      - "1234:80"
    environment:
      - PMA_ARBITRARY=1
    networks:
      - surgut-expert-network

volumes:
  dbdata:

networks:
  surgut-expert-network:
    driver: bridge

nginx settings:

server {
    listen 80;
    server_name surgut.expert.local;
    location / {
        proxy_pass http://next:3000;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host; proxy_cache_bypass $http_upgrade;
    }
}

How to fix? The most interesting thing is that until you install nginx, everything works fine, but it stops with nginx.