diff --git a/.github/workflows/push-to-docker.yml b/.github/workflows/push-to-docker.yml
index 6ca4be5..f3379e6 100644
--- a/.github/workflows/push-to-docker.yml
+++ b/.github/workflows/push-to-docker.yml
@@ -64,7 +64,7 @@ jobs:
         id: meta
         uses: docker/metadata-action@v4
         with:
-          images: jolanse/study_xxqg
+          images: johlanse/study_xxqg
           tags: |
             type=raw,value=latest
             type=ref,event=tag
diff --git a/docs/linux/index.md b/docs/linux/index.md
index 6a77fa6..22aacf7 100644
--- a/docs/linux/index.md
+++ b/docs/linux/index.md
@@ -11,7 +11,7 @@
 ## docker运行
 
 ```
-docker run --name study_xxqg -d -p 8080:8080 -v /etc/study_xxqg/:/opt/config/  jolanse/study_xxqg:latest
+docker run --name study_xxqg -d -p 8080:8080 -v /etc/study_xxqg/:/opt/config/  johlanse/study_xxqg:latest
 ```
 各个参数的含义：
 
diff --git a/model/user.go b/model/user.go
index 01bdb52..7e73a31 100644
--- a/model/user.go
+++ b/model/user.go
@@ -243,6 +243,8 @@ func UserCount(uid string) int {
  * @return error
  */
 func DeleteUser(uid string) error {
+	lock.Lock()
+	defer lock.Unlock()
 	ping()
 	_, err := db.Exec("delete from user where uid = ?;", uid)
 	if err != nil {