improved example dockerfile

docker-compose.yml

@@ -15,7 +15,6 @@ services:
       - DB_CONNECTION=s3Browser:hunter2@/s3Browser
     restart: unless-stopped
   s3:
-    container_name: s3
     image: minio/minio
     environment:
       - MINIO_ROOT_USER=admin
@@ -26,6 +25,19 @@ services:
     command: server /data --console-address ":9001"
     volumes:
     - s3_dev:/data
+  db:
+    image: mariadb
+    environment:
+      - MARIADB_ROOT_PASSWORD=hunter2
+      - MARIADB_DATABASE=s3Browser
+      - MARIADB_USER=s3Browser
+      - MARIADB_PASSWORD=hunter2
+    ports:
+      - 3306:3306
+    volumes:
+      - mariadb_dev:/var/lib/mysql
 volumes: 
   s3_dev:
     name: s3_dev
+  mariadb_dev:
+    name: mariadb_dev