[Warning] Aborted connection 8 to db: 'unconnected' user: 'unauthenticated' host: '172.18.0.5' (This connection closed normally without authentication)

Not able to connect my WordPress with MariaDB.

docker-compose.yml

version: '3'

services: db-headless: container_name: db-headless image: mariadb restart: unless-stopped environment:

MYSQL_RANDOM_ROOT_PASSWORD=yes
MYSQL_DATABASE=${WORDPRESS_DB_NAME}
MYSQL_USER=${WORDPRESS_DB_USER}
MYSQL_PASSWORD=${WORDPRESS_DB_PASSWORD} ports:
'3306:3306' expose:
'3306' wp-headless: build: . command: bash -c 'install_wordpress && apache2-foreground' container_name: wp-headless depends_on:
db-headless links:
db-headless:mariadb env_file: ./.env ports:
'8080:8080' user: www-data restart: unless-stopped volumes:
./wordpress:/var/www/html
./docker/install_wordpress.sh:/usr/local/bin/install_wordpress
./docker/migratedb_import.sh:/usr/local/bin/migratedb_import
./docker/postlightheadlesswpstarter.wordpress.xml:/var/www/postlightheadlesswpstarter.wordpress.xml
./docker/plugins:/var/www/plugins frontend: command: bash -c 'yarn && yarn start' container_name: frontend expose:
'3000' image: node ports:
'3000:3000' user: node volumes:
./frontend:/home/node/app working_dir: /home/node/app frontend-graphql: command: bash -c 'yarn && yarn start' container_name: frontend-graphql expose:
'3001' image: node ports:
'3001:3001' user: node volumes:
./frontend-graphql:/home/node/app working_dir: /home/node/app

<?php /**

// MySQL settings - You can get this info from your web host // /* The name of the database for WordPress / define( 'DB_NAME', 'wp_headless' );

/* MySQL database username / define( 'DB_USER', 'wp_headless' );

/* MySQL database password / define( 'DB_PASSWORD', 'wp_headless' );

/* MySQL hostname / define( 'DB_HOST', 'localhost' );

/* Database Charset to use in creating database tables. / define( 'DB_CHARSET', 'utf8' );

/* The Database Collate type. Don't change this if in doubt. / define( 'DB_COLLATE', '' );

/**#@+

Authentication Unique Keys and Salts.
Change these to different unique phrases!
You can generate these using the {@link https://api.wordpress.org/secret-key/1.1/salt/ WordPress.org secret-key service}
You can change these at any point in time to invalidate all existing cookies. This will force all users to have to log in again.
@since 2.6.0 */ define( 'AUTH_KEY', 'put your unique phrase here' ); define( 'SECURE_AUTH_KEY', 'put your unique phrase here' ); define( 'LOGGED_IN_KEY', 'put your unique phrase here' ); define( 'NONCE_KEY', 'put your unique phrase here' ); define( 'AUTH_SALT', 'put your unique phrase here' ); define( 'SECURE_AUTH_SALT', 'put your unique phrase here' ); define( 'LOGGED_IN_SALT', 'put your unique phrase here' ); define( 'NONCE_SALT', 'put your unique phrase here' );

/*#@-/

/**

WordPress Database Table prefix.
You can have multiple installations in one database if you give each
a unique prefix. Only numbers, letters, and underscores please! */ $tableprefix = 'wp';

/**

For developers: WordPress debugging mode.
Change this to true to enable the display of notices during development.
It is strongly recommended that plugin and theme developers use WP_DEBUG
in their development environments.
For information on other constants that can be used for debugging,
visit the Codex.
@link https://codex.wordpress.org/Debugging_in_WordPress */ define( 'WP_DEBUG', false );

/ That's all, stop editing! Happy publishing. /

/* Absolute path to the WordPress directory. / if ( ! defined( 'ABSPATH' ) ) { define( 'ABSPATH', dirname( FILE ) . '/' ); }

/* Sets up WordPress vars and included files. / require_once( ABSPATH . 'wp-settings.php' );