Error running gazebo_ros2_control_demo package: error: argument Call invalid choice: control

[CSharpRon]

Expected Behavior

• The container runs and the ros2 logs show that the cart was spawned successfully into the Gazebo process.

Actual Behavior

• The ros2 logs show the loading of the publishers and controllers but then crashes with the following error message:

[INFO] [ros2-6]: process started with pid [127]
[ros2-6] usage: ros2 [-h] Call ros2 <command> -h for more detailed usage. ...
[ros2-6] ros2: error: argument Call ros2 <command> -h for more detailed usage.: invalid choice: 'control' (choose from 'action', 'bag', 'component', 'daemon', 'doctor', 'extension_points', 'extensions', 'interface', 'launch', 'lifecycle', 'multicast', 'node', 'param', 'pkg', 'run', 'security', 'service', 'topic', 'wtf')

Steps to Reproduce

• git clone https://github.com/ros-simulation/gazebo_ros2_control
• cd gazebo_ros2_control/Docker
• docker build -t gazebo_ros2_control_demos:test .
• docker run gazebo_ros2_control_demos:test

Observations

I believe this is due to the fact that there is no explicit dependency for ros2_control in the gazebo_ros2_control_demos/package.xml

The issue is fixed locally by adding this dependency and then rebuilding the container, as rosdep is then able to install ros-foxy-ros2-control

[ahcorde]

@CSharpRon can you open a PR with the fix ?