fix(seleniumPort): add seleniumPort flag

lib/cli/index.ts

@@ -68,6 +68,12 @@ const proxyOption: yargs.Options = {
   describe: 'Use a proxy server to download files.',
   type: 'string'
 };
+const SELENIUM_PORT = 'seleniumPort';
+const seleniumPort: yargs.Options = {
+  describe: 'Optional port for the selenium standalone server',
+  default: 4444,
+  type: 'number'
+};
 const STANDALONE = 'standalone';
 const standaloneOption: yargs.Options = {
   describe: 'Install or update selenium server standalone.',
@@ -130,6 +136,7 @@ yargs
               .option(IEDRIVER, ieOption)
               .option(LOG_LEVEL, logLevelOption)
               .option(OUT_DIR, outDirOption)
+              .option(SELENIUM_PORT, seleniumPort)
               .option(STANDALONE, standaloneOption)
               .option(STANDALONE_NODE, standaloneNodeOption)
               .option(VERSIONS_CHROME, versionsChromeOption)

lib/cmds/utils.ts

@@ -120,6 +120,7 @@ export function convertArgs2Options(argv: yargs.Arguments): Options {
     options.server.version = versionsStandalone;
     options.server.chromeLogs = argv.chrome_logs as string;
     options.server.edge = argv.edge as string;
+    options.server.port = argv.seleniumPort as number;
   }
   return options;
 }