docs: add yml

- 도커 설정파일을 추가하였습니다.

src/main/resources/docker-compose.yml

@@ -0,0 +1,17 @@
+version: '3.4'
+
+services:
+  redis:
+    image: redis
+    ports:
+      - 6379:6379
+
+  donut:
+    image: donut
+    build:
+      context: .
+      dockerfile: ./Dockerfile
+    ports:
+      - 8080:8080
+    depends_on:
+      - redis