fix tmp folder creation

Dockerfile

@@ -30,6 +30,7 @@ RUN mkdir -p /app/uploads
 RUN mkdir -p /app/tmp
 
 RUN adduser -D appuser
+RUN chown -R appuser:appuser /app
 USER appuser
 
 ENV GIN_MODE=release

cmd/server/main.go

@@ -41,10 +41,14 @@ func main() {
 
 	// create temp folder
 	path := "./tmp"
+	if os.IsExist(os.Mkdir(path, os.ModePerm)) {
+		fmt.Printf("Temp folder already exists, skipping creation\n")
+	} else {
 		if err := os.MkdirAll(path, os.ModePerm); err != nil {
 			fmt.Printf("Error creating temp folder: %v\n", err)
 			return
 		}
+	}
 
 	r := gin.Default()