remove auth from /image/:id endpoint

cmd/server/main.go

@@ -22,7 +22,7 @@ func main() {
 	e.Use(middleware.Recover())
 
 	e.POST("/upload", handlers.UploadPost, handlers.AuthMiddleware)
-	e.GET("/image/:id", handlers.ImageGet, handlers.AuthMiddleware)
+	e.GET("/image/:id", handlers.ImageGet)
 	e.GET("/about", handlers.AboutGet, handlers.AuthMiddleware)
 
 	port := config.Port()