changed from postgres to mysql (mariaDB)

docker-compose.yml

@@ -1,15 +1,15 @@
-version: "3.9"
 
 services:
   db:
-    image: postgres
+    image: mariadb:latest
     container_name: lovedb
     restart: always
     environment:
-      POSTGRES_USER: love
-      POSTGRES_PASSWORD: love
-      POSTGRES_DB: lovedb
+      MARIADB_ROOT_PASSWORD: love
+      MARIADB_DATABASE: lovedb
+      MARIADB_USER: love
+      MARIADB_PASSWORD: love
     ports:
-      - "5432:5432"
+      - "3309:3306"
     volumes:
-      - ./data:/var/lib/postgresql
+      - ./data:/var/lib/mysql