使用Docker的多个WordPress网站与一个共享数据库

我想用docker运行一个共享数据库的多个WordPress网站。

是否可以指定一个数据库，并设置一个适当的卷到一个特定的SQL文件，以初始化每个容器在其docker-compose.yml文件中的WordPress？

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例如，我有一个共享容器siteA和docker-compose.yml三个docker-compose.yml文件。

当我在./shared运行./shared docker-compose up ，会为两个站点（example_a和example_b）创build两个DB。

当我在./siteA运行./siteA docker-compose up ，我想将当前数据库更改为example_a ，并使用./siteA/mysql/setup.sql中的sql进行一定数量的数据初始化该站点。

siteB也一样。

我知道我可以在- WORDPRESS_DB_NAME: example_a - ./db-data/mysql.dump.sql:/docker-entrypoint-initdb.d/install_wordpress.sql中的mysql部分中指定数据库和卷，如- WORDPRESS_DB_NAME: example_a和- ./db-data/mysql.dump.sql:/docker-entrypoint-initdb.d/install_wordpress.sql ，但是我只有一个共享的mysql，不能为每个站点指定数据库和卷。

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我有多个docker-compose.yml文件看起来像下面。

./shared/docker-compose.yml

 version: "2" services: proxy: image: jwilder/nginx-proxy privileged: true container_name: proxy ports: - 80:80 - 443:443 volumes: - /var/run/docker.sock:/tmp/docker.sock:ro - ./certs:/etc/nginx/certs:ro restart: always logging: options: max-size: 5m max-file: "10" mysql: image: mysql:5.7 container_name: mysql command: > --character-set-server=utf8mb4 --collation-server=utf8mb4_general_ci --max-allowed-packet=128M ports: - "3306:3306" environment: - MYSQL_ROOT_PASSWORD=foobar restart: always volumes: - db-data:/var/lib/mysql - ./mysql/sql-setup.sql:/docker-entrypoint-initdb.d/sql-setup.sql # to create multiple databases (eg example_a, example_b) logging: options: max-size: 5m max-file: "10" volumes: db-data: driver: local networks: default: external: name: shared 

./siteA/docker-compose.yml

 version: "2" services: example_a_wordpress: image: wordpress container_name: a.example environment: WORDPRESS_DB_NAME=example_a WORDPRESS_DB_PASSWORD=foobar VIRTUAL_HOST: a.example.dev external_links: - mysql restart: always volumes: - ./dist/theme:/var/www/html/wp-content/themes/main - ./dist/assets:/var/www/html/assets logging: options: max-size: 5m max-file: "10" networks: default: external: name: shared 

./siteB/docker-compose.yml

 version: "2" services: example_b_wordpress: image: wordpress container_name: b.example environment: WORDPRESS_DB_NAME=example_b WORDPRESS_DB_PASSWORD=foobar VIRTUAL_HOST: b.example.dev external_links: - mysql restart: always volumes: - ./dist/theme:/var/www/html/wp-content/themes/main - ./dist/assets:/var/www/html/assets logging: options: max-size: 5m max-file: "10" networks: default: external: name: shared