[BUG][Leak] fix new-delete-type-mismatch in StorageBackend (#6157)

be/src/util/storage_backend.h

@@ -40,5 +40,7 @@ public:
     virtual Status rm(const std::string& remote) = 0;
     virtual Status mkdir(const std::string& path) = 0;
     virtual Status exist(const std::string& path) = 0;
+
+    virtual ~StorageBackend() = default;
 };
 } // end namespace doris

docs/en/installing/compilation.md

@@ -42,7 +42,7 @@ This document focuses on how to code Doris through source code.
     ```
     $ docker images
     REPOSITORY              TAG                 IMAGE ID            CREATED             SIZE
-    apache/incubator-doris   build-env-1.3           ca207367c09f        21 hours ago        3.28GB
+    apache/incubator-doris   build-env-1.3           49f68cecbc1a        4 days ago          3.76GB
     ```
 
 Note: For different versions of Doris, you need to download the corresponding mirror version.

docs/zh-CN/installing/compilation.md

@@ -41,7 +41,7 @@ under the License.
     ```
     $ docker images
     REPOSITORY              TAG                 IMAGE ID            CREATED             SIZE
-    apache/incubator-doris   build-env-1.3           ca207367c09f        21 hours ago        3.28GB
+    apache/incubator-doris   build-env-1.3           49f68cecbc1a        4 days ago          3.76GB
     ```
 
 注: 针对不同的 Doris 版本，需要下载对应的镜像版本