add post,add redis in docker compose,add torrentutil test remove dockerfile, modify torrentutil

Change-Id: I8014d4994d0a09c2f28cfcf0f8d2a430372aaab5
diff --git a/src/main/java/com/example/g8backend/service/IPostService.java b/src/main/java/com/example/g8backend/service/IPostService.java
new file mode 100644
index 0000000..58c13dc
--- /dev/null
+++ b/src/main/java/com/example/g8backend/service/IPostService.java
@@ -0,0 +1,10 @@
+package com.example.g8backend.service;
+
+import com.example.g8backend.entity.Post;
+import com.baomidou.mybatisplus.extension.service.IService;
+
+import java.util.List;
+
+public interface IPostService extends IService<Post> {
+    List<Post> getPostsByUserId(Long userId);
+}