fixes

common/utils/flags.go

@@ -15,6 +15,7 @@ var (
 		&MetricsEnabled,
 		&MetricsAddr,
 		&MetricsPort,
+		&ServicePortFlag,
 	}
 	// RollupRelayerFlags contains flags only used in rollup-relayer
 	RollupRelayerFlags = []cli.Flag{
@@ -76,4 +77,10 @@ var (
 		Usage: "Import genesis batch into L1 contract during startup",
 		Value: false,
 	}
+	// ServicePortFlag is the port the service will listen on
+	ServicePortFlag = cli.IntFlag{
+		Name:  "service.port",
+		Usage: "Port that the service will listen on",
+		Value: 8080,
+	}
 )