chore: add databases with docker

Author: nicolasalexandre9

packages/_examples/demo/Dockerfile

@@ -7,6 +7,13 @@ Make sure that:
 
 ## Installation
 
+# 1. Construire les conteneurs
+docker compose build
+
+# 2. Démarrer les services
+docker compose up -d
+
+
 Install the requirements
 
 ```
@@ -36,4 +43,3 @@ Run the app
 ```
 rails server
 ```
-

packages/_examples/demo/README.md

@@ -13,7 +13,7 @@ development:
       # Provides the hosts the default client can connect to. Must be an array
       # of host:port pairs. (required)
       hosts:
-        - localhost:27017
+        - localhost:27018
       options:
         # Note that all options listed below are Ruby driver client options (the mongo gem).
         # Please refer to the driver documentation of the version of the mongo gem you are using

packages/_examples/demo/config/mongoid.yml

@@ -0,0 +1,39 @@
+services:
+  postgres:
+    image: postgres:15
+    container_name: postgres_db
+    restart: always
+    environment:
+      POSTGRES_USER: ${DB_USERNAME}
+      POSTGRES_PASSWORD: ${DB_PASSWORD}
+      POSTGRES_DB: ${DB_DATABASE}
+    ports:
+      - "5434:${DB_PORT}"
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+
+  mysql:
+    image: mysql:8
+    container_name: mysql_db
+    restart: always
+    environment:
+      MYSQL_ROOT_PASSWORD: ${DB_PASSWORD_MYSQL}
+      MYSQL_DATABASE: ${DB_DATABASE_MYSQL}
+    ports:
+      - "3308:${DB_PORT_MYSQL}"
+    volumes:
+      - mysql_data:/var/lib/mysql
+
+  mongo:
+    image: mongo:6
+    container_name: mongo_db
+    restart: always
+    ports:
+      - "27018:27017"
+    volumes:
+      - mongo_data:/data/db
+
+volumes:
+  postgres_data:
+  mysql_data:
+  mongo_data: