let's encrypt update

main.go

@@ -28,7 +28,10 @@ func main() {
 		c.File("assets/favicon.ico")
 	})
 	
-	router.Static("/.well-known", "public/.well-known")
+	router.GET("/.well-known/acme-challenge/:file", func(c *gin.Context) {
+		fullpath := "public/.well-known/acme-challenge/" + c.Param("file")
+		c.File(fullpath)
+	})
 
 	router.GET("/ping", func(c *gin.Context) {
 		c.String(http.StatusOK, "pong")