Respect --discovery_ip in pair subcommand

cmd/bin.ts

@@ -57,7 +57,7 @@ yargs(hideBin(process.argv))
     (yargs) => {
       return yargs
         .option("log_level", { describe: "Set log level", default: "info" })
-        .option("discovery_ip", { describe: "Camera discovery IP address", default: "192.168.1.255" })
+        .option("discovery_ip", { describe: "Camera discovery IP address" })
         .option("ssid", { describe: "Wifi network for the camera to connect to" })
         .option("password", { describe: "Wifi network password" })
         .demandOption(["ssid", "password"])
@@ -68,6 +68,9 @@ yargs(hideBin(process.argv))
       if (majorVersion < 16) {
         logger.error(`Node version ${majorVersion} is not supported, may malfunction`);
       }
+      if (argv.discovery_ip !== undefined) {
+        config.discovery_ips = [argv.discovery_ip];
+      }
       pair({ ssid: argv.ssid, password: argv.password });
     },
   )