feat(cli): Use CLI to launch OpenHands UI server via Docker (#9783)

Co-authored-by: openhands <openhands@all-hands.dev>

openhands/cli/entry.py

@@ -0,0 +1,54 @@
+"""Main entry point for OpenHands CLI with subcommand support."""
+
+import sys
+
+import openhands
+import openhands.cli.suppress_warnings  # noqa: F401
+from openhands.cli.gui_launcher import launch_gui_server
+from openhands.cli.main import run_cli_command
+from openhands.core.config import get_cli_parser
+from openhands.core.config.arg_utils import get_subparser
+
+
+def main():
+    """Main entry point with subcommand support and backward compatibility."""
+    parser = get_cli_parser()
+
+    # If user only asks for --help or -h without a subcommand
+    if len(sys.argv) == 2 and sys.argv[1] in ('--help', '-h'):
+        # Print top-level help
+        print(parser.format_help())
+
+        # Also print help for `cli` subcommand
+        print('\n' + '=' * 80)
+        print('CLI command help:\n')
+
+        cli_parser = get_subparser(parser, 'cli')
+        print(cli_parser.format_help())
+
+        sys.exit(0)
+
+    # Special case: no subcommand provided, simulate "openhands cli"
+    if len(sys.argv) == 1 or (
+        len(sys.argv) > 1 and sys.argv[1] not in ['cli', 'serve']
+    ):
+        # Inject 'cli' as default command
+        sys.argv.insert(1, 'cli')
+
+    args = parser.parse_args()
+
+    if hasattr(args, 'version') and args.version:
+        print(f'OpenHands CLI version: {openhands.get_version()}')
+        sys.exit(0)
+
+    if args.command == 'serve':
+        launch_gui_server(mount_cwd=args.mount_cwd, gpu=args.gpu)
+    elif args.command == 'cli' or args.command is None:
+        run_cli_command(args)
+    else:
+        parser.print_help()
+        sys.exit(1)
+
+
+if __name__ == '__main__':
+    main()