Add docker elements to ease local testing

.gitattributes

@@ -5,3 +5,4 @@
 /Robofile.php    export-ignore
 /*.md            export-ignore
 /*.yml           export-ignore
+/*.Dockerfile    export-ignore

docker-compose.yml

@@ -0,0 +1,42 @@
+version: "3.9"
+
+services:
+
+  php74:
+    image: codeception-module-db-php74:2.2.0
+    build:
+      context: .
+      dockerfile: ./php74.Dockerfile
+    environment:
+      MYSQL_DSN: "mysql:host=host.docker.internal;port=3102;dbname=codeception"
+      MYSQL_USER: root
+      MYSQL_PASSWORD: codeception
+      XDEBUG_MODE: "debug"
+      XDEBUG_CONFIG: "client_host=host.docker.internal; client_port=9000; mode=debug; start_wih_request=1"
+      PHP_IDE_CONFIG: "serverName=codeception-module-db" # the name must be the same as in your PHP -> Server -> "name" field
+    volumes:
+      - ".:/var/www/html"
+
+  php81:
+    image: codeception-module-db-php81:2.2.0
+    build:
+      context: .
+      dockerfile: ./php81.Dockerfile
+    environment:
+      MYSQL_DSN: "mysql:host=host.docker.internal;port=3102;dbname=codeception"
+      MYSQL_USER: root
+      MYSQL_PASSWORD: codeception
+      XDEBUG_MODE: "debug"
+      XDEBUG_CONFIG: "client_host=host.docker.internal; client_port=9000; mode=debug; start_wih_request=1"
+      PHP_IDE_CONFIG: "serverName=codeception-module-db" # the name must be the same as in your PHP -> Server -> "name" field
+    volumes:
+      - ".:/var/www/html"
+
+  mariadb105:
+    image: mariadb:10.5
+    environment:
+      MARIADB_ROOT_PASSWORD: codeception
+      MARIADB_DATABASE: codeception
+    ports:
+      - "3102:3306"
+

php74.Dockerfile

@@ -0,0 +1,33 @@
+FROM php:7.4-cli
+
+RUN apt-get update && \
+    apt-get install -y \
+        unzip \
+        wget \
+        git \
+        zlib1g-dev \
+        libzip-dev \
+		mariadb-client-10.5
+
+RUN docker-php-ext-install pdo pdo_mysql && docker-php-ext-enable pdo pdo_mysql
+RUN docker-php-ext-install mysqli && docker-php-ext-enable mysqli
+RUN docker-php-ext-install zip
+
+RUN pecl install xdebug-3.1.5 && \
+    echo zend_extension=xdebug.so > $PHP_INI_DIR/conf.d/xdebug.ini
+
+COPY --from=composer /usr/bin/composer /usr/bin/composer
+
+WORKDIR /var/www/html
+
+COPY composer.json .
+COPY composer.lock .
+
+RUN composer install --no-autoloader
+
+COPY . .
+
+RUN composer dump-autoload -o
+
+ENTRYPOINT ["tail"]
+CMD ["-f", "/dev/null"]

php81.Dockerfile

@@ -0,0 +1,33 @@
+FROM php:8.1-cli
+
+RUN apt-get update && \
+    apt-get install -y \
+        unzip \
+        wget \
+        git \
+        zlib1g-dev \
+        libzip-dev \
+		mariadb-client-10.5
+
+RUN docker-php-ext-install pdo pdo_mysql && docker-php-ext-enable pdo pdo_mysql
+RUN docker-php-ext-install mysqli && docker-php-ext-enable mysqli
+RUN docker-php-ext-install zip
+
+RUN pecl install xdebug-3.1.5 && \
+    echo zend_extension=xdebug.so > $PHP_INI_DIR/conf.d/xdebug.ini
+
+COPY --from=composer /usr/bin/composer /usr/bin/composer
+
+WORKDIR /var/www/html
+
+COPY composer.json .
+COPY composer.lock .
+
+RUN composer install --no-autoloader
+
+COPY . .
+
+RUN composer dump-autoload -o
+
+ENTRYPOINT ["tail"]
+CMD ["-f", "/dev/null"]

tests/unit/Codeception/Module/Db/MySqlDbTest.php

@@ -23,11 +23,13 @@ public function getPopulator(): string
     public function getConfig(): array
     {
         $host = getenv('MYSQL_HOST') ? getenv('MYSQL_HOST') : 'localhost';
+        $user = getenv('MYSQL_USER') ? getenv('MYSQL_USER') : 'root';
         $password = getenv('MYSQL_PASSWORD') ? getenv('MYSQL_PASSWORD') : '';
+        $dsn = getenv('MYSQL_DSN') ? getenv('MYSQL_DSN') : 'mysql:host='.$host.';dbname=codeception_test';
 
         return [
-            'dsn' => 'mysql:host='.$host.';dbname=codeception_test',
-            'user' => 'root',
+            'dsn' => $dsn,
+            'user' => $user,
             'password' => $password,
             'dump' => 'tests/data/dumps/mysql.sql',
             'reconnect' => true,