fix: update database connection URL and configure frontend build context

docker-compose.yml

@@ -24,7 +24,7 @@ services:
     ports:
       - "8082:8080"
     environment:
-      - SPRING_DATASOURCE_URL=jdbc:postgresql://db:5433/tododb
+      - SPRING_DATASOURCE_URL=jdbc:postgresql://db:5432/tododb
       - SPRING_DATASOURCE_USERNAME=postgres
       - SPRING_DATASOURCE_PASSWORD=postgres
     depends_on:
@@ -32,12 +32,16 @@ services:
         condition: service_healthy
 
   frontend:
-    build: ./frontend
+    build: 
+      context: ./frontend
+      args:
+        VITE_BASE_URL: "http://localhost:8082/api/todos"      
     container_name: todo-frontend
     ports:
       - "5173:80"
     depends_on:
       - backend
 
+
 volumes:
   postgres_data: