locker98_tools_ws/locker98_tools_bringup/launch/nav2.launch.xml

<launch>
    <!-- Declare Launch Arguments -->
    <arg name="use_sim_time" default="false" description="Use simulation time" />
    <arg name="map" default="" description="Map input" />

    <!-- Include bringup launch file -->
    <include file="$(find-pkg-share nav2_bringup)/launch/bringup_launch.py">
        <arg name="use_sim_time" value="$(var use_sim_time)" />
        <arg name="map" value="$(var map)" />
    </include>

    <!-- RViz node -->
    <node pkg="rviz2" exec="rviz2" output="screen">
        <param name="config" value="$(find-pkg-share locker98_tools_bringup)/config/rviz/nav2_config.rviz" />
    </node>
</launch>