Why does mariadb connection fail via docker? - mysql

Question

My docker-compose.yml looks like this:
version: '3'
services:
database:
build:
context: ./database
environment:
- MYSQL_DATABASE=${DATABASE_NAME}
- MYSQL_USER=${DATABASE_USER}
- MYSQL_PASSWORD=${DATABASE_PASSWORD}
- MYSQL_ROOT_PASSWORD=${DATABASE_ROOT_PASSWORD}
ports:
- "3306:3306"
volumes:
- ./database/init.sql:/docker-entrypoint-initdb.d/init.sql
- ./database/data:/var/lib/mysql
php-fpm:
build:
context: ./php-fpm
depends_on:
- database
environment:
- APP_ENV=${APP_ENV}
- APP_SECRET=${APP_SECRET}
- DATABASE_URL=mysql://${DATABASE_USER}:${DATABASE_PASSWORD}#database:3306/${DATABASE_NAME}?serverVersion=5.7
volumes:
- ../src:/var/www
nginx:
build:
context: ./nginx
volumes:
- ../src:/var/www
- ./nginx/nginx.conf:/etc/nginx/nginx.conf
- ./nginx/sites/:/etc/nginx/sites-available
- ./nginx/conf.d/:/etc/nginx/conf.d
- ./logs:/var/log
depends_on:
- php-fpm
ports:
- "80:80"
- "443:443"
With this .env file:
DATABASE_NAME=testDB
DATABASE_USER=appuser
DATABASE_PASSWORD=apppassword
DATABASE_ROOT_PASSWORD=password
APP_ENV=dev
APP_SECRET=24e17c47430bd2044a61c131c1cf6990
Result after i ran docker-compose build and docker-compose-up:
Version: '10.5.4-MariaDB-1:10.5.4+maria~focal' socket: '/run/mysqld/mysqld.sock' port: 3306 mariadb.org binary distribution
database_1 | 2020-06-25 17:13:10 3 [Warning] Aborted connection 3 to db: 'unconnected' user: 'unauthenticated' host: 'symfonytestproject_php-fpm_1.symfonytestproject_default' (This connection closed normally without authentication)
And now the console stuck and i have to force a quit.
I tried always everything: removing volumes, rebuild volumes...
Iam very thankfull when anyone can help me with this problem.