Gitlab CI Runner | Custom mysql conf - mysql

Question

I'm trying to set my own mysql conf for Gitlab CI Runner.
I found in the documentation how to set my own php.ini :
before_script:
- cp ci/php.ini /usr/local/etc/php/conf.d/test.ini
I didn't find informations about how setting my.cnf, I tried :
before_script:
- cp ci/my.cnf /usr/local/etc/mysql/conf.d/my.cnf
But /usr/local/etc/mysql/ doesn't exist in the generated environment.
This is all my gitlab.ci :
services:
- mysql:latest
variables:
# Configure mysql environment variables
WITH_XDEBUG: "1"
MYSQL_ROOT_PASSWORD: password
MYSQL_DATABASE: symfony
cache:
paths:
- vendor/
before_script:
# Install dependencies
- bash ci/docker_install.sh > /dev/null
- cp ci/php.ini /usr/local/etc/php/conf.d/test.ini
- cp ci/my.cnf /usr/local/etc/mysql/conf.d/my.cnf
- mv app/config/parameters.gitlab.yml app/config/parameters.yml
- mv app/config/config_test.gitlab.yml app/config/config_test.yml
- composer clear-cache
- composer install
- php bin/console doctrine:schema:update --force
- php bin/console doctrine:fixtures:load
test:
image: php:7.0
stage: test
script:
- echo "Running PHPUnit Tests"
- vendor/bin/phpunit --configuration phpunit.xml.dist --colors --debug --coverage-text
And my docker_install.sh :
#!/bin/bash
# We need to install dependencies only for Docker
[[ ! -e /.dockerenv ]] && [[ ! -e /.dockerinit ]] && exit 0
set -xe
# Install git (the php image doesn't have it) which is required by composer
apt-get update -yqq
apt-get install git -yqq
apt-get install wget -yqq
apt-get install zip unzip -yqq
# Install composer
curl -sS https://getcomposer.org/installer | php
mv composer.phar /usr/local/bin/composer
# Install mysql driver
# Here you can install any other extension that you need
docker-php-ext-install pdo_mysql mbstring
Thanks.

Answer 1

I don't think it is possible to easily mount the config inside of the service container using the Gitlab CI config. It is probably easier to just create a Dockerfile that extends the image that you use for testing and set the the configs you need there.
You can find an example of such a small Dockerfile here, where the author copies a config file to set the encoding to utf8:
https://hub.docker.com/r/dnhsoft/mysql-utf8/dockerfile
Or you can simply append your configs for example like this if you don't want to write a Dockerfile that copies files:
FROM mysql:8.0
RUN echo '[mysqld]' >> /etc/mysql/conf.d/mysql.cnf
RUN echo 'default-authentication-plugin = mysql_native_password' >> /etc/mysql/conf.d/mysql.cnf
RUN echo 'collation-server = utf8mb4_general_ci' >> /etc/mysql/conf.d/mysql.cnf
RUN echo 'character-set-server = utf8mb4' >> /etc/mysql/conf.d/mysql.cnf
Once your Dockerfile has the configs you need you can publish it to Dockerhub under your username. Then in your gitlab-ci.yml you can use it like this:
services:
- {name: 'mydockerusername/mysql:1', alias: 'mysql'}
In your scripts in gitlab-ci.yml you can then connect to your custom database container like this:
script:
- 'mysql -u gitlabci -h mysql --password="gitlabci" -e "SHOW DATABASES"'