Launch wordpress in AWS EC2 docker with RDS

docker-compose.yml

version: "2"

services:
    wp_web:
        image: wordpress
        restart: always
        ports:
            - "80:80"
        environment:
            WORDPRESS_DB_HOST: rds-host
            WORDPRESS_DB_USER: rds-user
            WORDPRESS_DB_PASSWORD: rds-password
            WORDPRESS_DB_NAME: wordpress
        volumes:
            - /opt/wordpress/plugins:/var/www/html/wp-content/plugins
            - /opt/wordpress/themes:/var/www/html/wp-content/themes
            - /opt/wordpress/uploads:/var/www/html/wp-content/uploads