Demo showing how to spawn multiple ROSbots in Gazebo

1. Pull Docker images with:

docker compose pull

2. start the simulation with:

xhost +local:docker && docker compose up

3. open a shell inside a docker container:

docker compose exec -it rosbot bash

4. for controlling robot1 with teleop run:

ros2 run teleop_twist_keyboard teleop_twist_keyboard --ros-args -r __ns:=/robot1