feat: port flag

cmd/lash/main.go

@@ -11,6 +11,7 @@ import (
 )
 
 var versionFlag = flag.Bool("version", false, "Print out version and exit.")
+var port = flag.Int("p", 1337, "Set the port for LASH exchanges.")
 
 func main() {
 	flag.Parse()
@@ -24,8 +25,8 @@ func main() {
 
 	errx.Log("Your token is \033[1;92m%s\033[0m", lash.Token)
 
-	errx.Log("starting server at http://0.0.0.0:1337")
-	if err := http.ListenAndServe(":1337", srv); err != nil {
+	errx.Log("starting server at http://0.0.0.0:%d", *port)
+	if err := http.ListenAndServe(fmt.Sprintf(":%d", *port), srv); err != nil {
 		errx.FatalPerror(err)
 	}
 }