Как правильно настроить docker контейнеры для корректной работы curl в php?

version: '3'

services:

    php:
        build:
            context: ./docker/php
        ports:
            - ${PORT_PHP}:9000
        volumes:
            - ${PATH_PROJECT}:/srv/www/promo
            - ${PATH_STATIC}:/srv/www/promo-static
            - ./docker/php/www.conf:/usr/local/etc/php-fpm.d/www.conf
            - ./docker/php/custom.ini:/usr/local/etc/php/conf.d/custom.ini
        environment:
            MYSQL_USER: ${MYSQL_USER}
            MYSQL_PASSWORD: ${MYSQL_PASSWORD}

    nginx:
        image: nginx:1.13.8
        ports:
            - ${PORT_NGINX}:80
        volumes:
            - ${PATH_PROJECT}:/srv/www/promo
            - ${PATH_STATIC}:/srv/www/promo-static
            - ./docker/nginx/default.conf:/etc/nginx/conf.d/default.conf
        depends_on:
            - php
        environment:
            NGINX_HOST: ${NGINX_HOST}
            PORT_PHP: ${PORT_PHP}

    mysql:
        image: mysql:5.7
        ports:
            - ${PORT_MYSQL}:3306
        depends_on:
            - php
        environment:
            MYSQL_ROOT_PASSWORD: ${MYSQL_ROOT_PASSWORD}
            MYSQL_DATABASE: ${MYSQL_DATABASE}
            MYSQL_USER: ${MYSQL_USER}
            MYSQL_PASSWORD: ${MYSQL_PASSWORD}

...
PORT_PHP=9002
PORT_NGINX=8002
PORT_MYSQL=3308