Example of docker-izing a wordpress setup in docker-compose

docker-compose.yml

version: '3.3'

services:
   db:
     image: mysql:5.7
     volumes:
       - db_data:/var/lib/mysql
     restart: always
     environment:
       MYSQL_ROOT_PASSWORD: somewordpress
       MYSQL_DATABASE: wordpress
       MYSQL_USER: wordpress
       MYSQL_PASSWORD: wordpress

   wordpress:
     depends_on:
       - db
     image: wordpress:latest
     volumes: ["./:/var/www/html"]
     ports:
       - "8000:80"
     restart: always
     environment:
       WORDPRESS_DB_HOST: db:3306
       WORDPRESS_DB_USER: wordpress
       WORDPRESS_DB_PASSWORD: wordpress
       WORDPRESS_DB_NAME: wordpress

   phpmyadmin:
     depends_on:
       - db
     image: phpmyadmin/phpmyadmin
     restart: always
     ports:
       - 8080:80
     environment:
       PMA_HOST: db
       MYSQL_ROOT_PASSWORD: password
volumes:
    db_data: {}