Running publisher

docker -H watchtower10.local run -it  --rm --net host --privileged --name light-sensor -v /data:/data gian1717/sensor:p2

Running subscriber

docker -H hostname.local exec -it light-sensor /bin/bash

Once inside container,

source /catkin_ws/devel/setup.bash
rostopic echo /hostname/light_sensor_node/sensor_data