502 Bad Gateway nginx docker – Phpmyadmin

I have php, nginx, mysql, phpmyadmin in Docker and the are running all.
But I can not use any othe them because, when I visit the localhost it shows me the following Error: 502 Bad Gateway

I don’t know why, I tried alot to know the reason but Icound’t figure it out.
That is my Dockerfile

FROM php:8.0-fpm
          
RUN apt update   
            && apt install -y zlib1g-dev g++ git libicu-dev zip libzip-dev zip 
            && docker-php-ext-install intl opcache pdo pdo_mysql 
            && pecl install apcu 
            && docker-php-ext-enable apcu 
            && docker-php-ext-configure zip 
            && docker-php-ext-install zip
WORKDIR /var/www/infoSystem
RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
RUN curl -sS https://get.symfony.com/cli/installer | bash
RUN mv /root/.symfony/bin/symfony /usr/local/bin/symfony
RUN git config --global user.email "[email protected]" 
        && git config --global user.name  "test"




FROM node:12.13.0
RUN apt update
WORKDIR /var/www/infoSystem
COPY entrypoint.sh /usr/local/bin/entrypoint
RUN ["chmod", "+x", "/usr/local/bin/entrypoint"]
ENTRYPOINT ["/usr/local/bin/entrypoint"]
USER node

entrypoint.sh file

#!/bin/bash
# Prevent container from shutting down
while true; do sleep 3600; done

default.conf file

server {

    listen 80;
    index index.php;
    server_name localhost;
    root /var/www/infoSystem/public;
    error_log /var/log/nginx/project_error.log;
    access_log /var/log/nginx/project_access.log;

    location / {
        try_files  $uri /index.php$is_args$args;
    }

    location ~ ^/index\.php(/|$) {
        fastcgi_pass php:9000;
        fastcgi_split_path_info ^(.+\.php)(/.*)$;
        include fastcgi_params;

        fastcgi_param SCRIPT_FILENAME $realpath_root$fastcgi_script_name;
        fastcgi_param DOCUMENT_ROOT $realpath_root;

        fastcgi_buffer_size 128k;
        fastcgi_buffers 4 256k;
        fastcgi_busy_buffers_size 256k;

        internal;
    }

    location ~ \.php$ {
        return 404;
    }

}

docker-compose.yml file

version: '3.3'

services:
  database:
    container_name: database
    image: mysql:8.0
    restart: always
    command: --default-authentication-plugin=mysql_native_password
    environment:
      MYSQL_ROOT_PASSWORD: alsbls
      MYSQL_DATABASE: infoSystem
      MYSQL_USER: alsbls
      MYSQL_PASSWORD: alsbls
    ports:
      - '4306:3306'
    volumes:
      - ./mysql:/var/lib/mysql

  php:
    container_name: php
    restart: always
    build:
      context: ./php
    ports:
      - '9000:9000'
    volumes:
      - ./app:/var/www/infoSystem

    depends_on:
      - database

  nginx:
    container_name: nginx
    image: nginx:stable-alpine
    restart: always
    ports:
      - '8080:80'
    volumes:
      - ./app:/var/www/infoSystem
      - ./nginx/default.conf:/etc/nginx/conf.d/default.conf
    depends_on:
      - php
      - database

  phpmyadmin:
    image: phpmyadmin/phpmyadmin:latest
    restart: always
    environment:
      PMA_HOST: database
      PMA_USER: alsbls_root
      PMA_PASSWORD: alsbls_root
    ports:
      - "8081:81"

  encore:
    container_name: node
    restart: always
    build:
      context: ./php
    volumes:
      - ./app:/var/www/infoSystem