listen on port 8080 instead of 3000

main.go

@@ -17,7 +17,7 @@ func main() {
 	flag.Parse()
 
 	http.HandleFunc("/", post)
-	err := http.ListenAndServe(":3000", nil)
+	err := http.ListenAndServe(":8080", nil)
 	if err != nil {
 		panic(err)
 	}