[WordPress]Store Docker data locally.

Docker is a very convenient platform that allows you to prepare virtual environments in containers.

Virtual environments are prepared for each project or for each environment test, but if all of them are started, there will not be enough memory. Therefore, it is more likely to start them each time they are needed.

When docker-compose down, the data is also deleted because it is in the container.
This time, we will store the data locally so that it can be persisted.

The directory structure of this article is as follows.

.
├── README.md
├── docker-compose.yml
├── project
└── data

Store in Docker containers.

Save the data in a Docker container.
If you do this, the data will remain unless you delete the container.

If docker-compose down is performed, the container data is deleted.

version: '3.3'
 
services:
   wordpress:
     image: wordpress:latest
     container_name: wp
     depends_on:
       - db
     ports:
       - "9901:80"
     environment:
       WORDPRESS_DB_HOST: db:3306
       WORDPRESS_DB_USER: wordpress
       WORDPRESS_DB_PASSWORD: wordpress
       WORDPRESS_DB_NAME: wordpress
     volumes:
       - ./project:/var/www/html
 
   db:
     image: mysql:5.7
     container_name: wp-mysql
     ports:
      - "4307:3306"
     volumes:
      - db_data:/var/lib/mysql
     environment:
       MYSQL_ROOT_PASSWORD: root
       MYSQL_DATABASE: wordpress
       MYSQL_USER: wordpress
       MYSQL_PASSWORD: wordpress
       
volumes:
    db_data:

Store MySQL data locally.

Keep MySQL data locally by mounting it in a local directory.

This means that even if you docker-compose down and the container is deleted, the data will remain.
( Of course, if you delete the local data, the data will disappear. )

version: '3.3'
 
services:
   wordpress:
     image: wordpress:latest
     container_name: wp
     depends_on:
       - db
     ports:
       - "9901:80"
     environment:
       WORDPRESS_DB_HOST: db:3306
       WORDPRESS_DB_USER: wordpress
       WORDPRESS_DB_PASSWORD: wordpress
       WORDPRESS_DB_NAME: wordpress
     volumes:
       - ./project:/var/www/html
 
   db:
     image: mysql:5.7
     container_name: wp-mysql
     ports:
      - "4307:3306"
     volumes:
      - ./data/db:/var/lib/mysql
     environment:
       MYSQL_ROOT_PASSWORD: root
       MYSQL_DATABASE: wordpress
       MYSQL_USER: wordpress
       MYSQL_PASSWORD: wordpress
       
volumes:
    db_data: