Fix: 배포 action 수정

Author: thelightway24

.github/workflows/deploy.yml

@@ -37,7 +37,7 @@ jobs:
         uses: docker/build-push-action@v4
         with:
           context: .
-          dockerfile: docker/Dockerfile
+          file: docker/Dockerfile
           push: true
           tags: thelightway/ai-teacher-back:latest