problem accessing mysql container from php container in intellij idea

Hi

I have the following composer file with a predefined network. When I use `composer test` inside the PHP container, everything works fine and tests - including those that require the MySQL container - execute. Still, it fails when I want to complete the same flow from the debug/run configurations. I would appreciate any help on this.

debug/run config: https://ibb.co/mJFrny5

docker-compose.yaml

version: '3'

volumes:
    redis_data:
        driver: local
    mysql_data:
        driver: local

services:
    package_web:
        restart: unless-stopped
        build:
            context: ./docker/web
            dockerfile: Dockerfile
            args:
                - WWW_DATA_USER=${APP_UID}
                - WWW_DATA_GROUP=${APP_GID}
                - ENVIRONMENT=${APP_ENV}
        expose:
            - "80"
            - "443"
        volumes:
            - ./:/var/www/
            - ./docker/web/nginx.conf:/etc/nginx/nginx.conf
            - ./docker/web/site.conf:/etc/nginx/sites-enabled/site.conf
        ports:
            - "8305:80"

    package_php:
        restart: unless-stopped
        build:
            context: .
            dockerfile: ./docker/php/Dockerfile
            args:
                - WWW_DATA_USER=${APP_UID}
                - WWW_DATA_GROUP=${APP_GID}
                - ENVIRONMENT=${APP_ENV}
        expose:
            - "9000"
        environment:
            - WWW_DATA_USER=${APP_UID}
        volumes:
            - ./:/var/www
            - ./docker/php/php-fpm.conf:/usr/local/etc/php-fpm.conf
            - ./docker/php/php_prod.ini:/usr/local/etc/php/conf.d/custom.ini
            - ./docker/php/www.conf:/usr/local/etc/php-fpm.d/www.conf

    package_redis:
        image: redis:6.2.6
        restart: unless-stopped
        volumes:
            - redis_data:/data
        ports:
            - "8307:6379"

    package_mysql:
        restart: unless-stopped
        build:
            context: ./docker/mysql
            dockerfile: Dockerfile
            args:
                - UID=${APP_UID}
                - GID=${APP_GID}
        environment:
            - MYSQL_ROOT_PASSWORD=${DB_ROOT_PASSWORD}
        ports:
            - "8306:3306"
        volumes:
            - mysql_data:/var/lib/mysql
            - ./docker/mysql/config.ini:/etc/mysql/conf.d/config.ini

networks:
    default:
        external:
            name: my_package

phpunit.xml

<?xml version="1.0" encoding="UTF-8"?>
<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         bootstrap="vendor/autoload.php"
         backupGlobals="false"
         backupStaticAttributes="false"
         colors="true"
         verbose="true"
         convertErrorsToExceptions="true"
         convertNoticesToExceptions="true"
         convertWarningsToExceptions="true"
         processIsolation="false"
         stopOnFailure="false"
         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd">
    <testsuites>
        <testsuite name="Package">
            <directory suffix=".php">./tests/</directory>
        </testsuite>
    </testsuites>
    <coverage>
        <include>
            <directory>src/</directory>
        </include>
    </coverage>
    <php>
        <server name="APP_ENV" value="testing"/>
        <server name="DB_CONNECTION" value="mysql"/>
        <!-- also tested localhost(connection refused), -->
        <!-- container-ip (connection timeout) with DB_PORT 3306 -->
        <!-- docker service name (php_network_getaddresses: getaddrinfo failed: Name or service not known)-->
        <server name="DB_HOST" value="127.0.0.1"/>
        <server name="DB_USERNAME" value="root"/>
        <server name="DB_PORT" value="8306"/>
        <server name="DB_PASSWORD" value="some-strong-password"/>
        <server name="DB_DATABASE" value="laravel"/>
    </php>
</phpunit>