Using MySQL

The Docker configuration of this repository is extensible thanks to Flex recipes. By default, the recipe installs PostgreSQL. If you prefer to work with MySQL, follow these steps:

First, install the symfony/orm-pack package as described: docker compose exec php composer req symfony/orm-pack

Docker Configuration

Change the database image to use MySQL instead of PostgreSQL in compose.yaml:

###> doctrine/doctrine-bundle ###
-   image: postgres:${POSTGRES_VERSION:-15}-alpine
+   image: mysql:${MYSQL_VERSION:-8}
    environment:
-     POSTGRES_DB: ${POSTGRES_DB:-app}
+     MYSQL_DATABASE: ${MYSQL_DATABASE:-app}
      # You should definitely change the password in production
+     MYSQL_RANDOM_ROOT_PASSWORD: "true"
-     POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-!ChangeMe!}
+     MYSQL_PASSWORD: ${MYSQL_PASSWORD:-!ChangeMe!}
-     POSTGRES_USER: ${POSTGRES_USER:-app}
+     MYSQL_USER: ${MYSQL_USER:-app}
    healthcheck:
-     test: ["CMD", "pg_isready", "-d", "${POSTGRES_DB:-app}", "-U", "${POSTGRES_USER:-app}"]
+     test: ["CMD", "mysqladmin" ,"ping", "-h", "localhost"]
      timeout: 5s
      retries: 5
      start_period: 60s
    volumes:
-     - database_data:/var/lib/postgresql/data:rw
+     - database_data:/var/lib/mysql:rw
      # You may use a bind-mounted host directory instead, so that it is harder to accidentally remove the volume and lose all your data!
-     # - ./docker/db/data:/var/lib/postgresql/data:rw
+     # - ./docker/db/data:/var/lib/mysql:rw
###< doctrine/doctrine-bundle ###

Depending on the database configuration, modify the environment in the same file at services.php.environment.DATABASE_URL

DATABASE_URL: mysql://${MYSQL_USER:-app}:${MYSQL_PASSWORD:-!ChangeMe!}@database:3306/${MYSQL_DATABASE:-app}?serverVersion=${MYSQL_VERSION:-8}&charset=${MYSQL_CHARSET:-utf8mb4}

Since we changed the port, we also have to define this in the compose.override.yaml:

###> doctrine/doctrine-bundle ###
  database:
    ports:
-     - "5432"
+     - "3306"
###< doctrine/doctrine-bundle ###

Last but not least, we need to install the MySQL driver in Dockerfile:

###> doctrine/doctrine-bundle ###
-RUN install-php-extensions pdo_pgsql
+RUN install-php-extensions pdo_mysql
###< doctrine/doctrine-bundle ###

Change Environment

Change the database configuration in .env:

DATABASE_URL=mysql://${MYSQL_USER:-app}:${MYSQL_PASSWORD:-!ChangeMe!}@database:3306/${MYSQL_DATABASE:-app}?serverVersion=${MYSQL_VERSION:-8}&charset=${MYSQL_CHARSET:-utf8mb4}

Final steps

Rebuild the docker environment:

docker compose down --remove-orphans && docker compose build --pull --no-cache

Start the services:

docker compose up -d

Test your setup:

docker compose exec php bin/console dbal:run-sql -q "SELECT 1" && echo "OK" || echo "Connection is not working"