How to use SHM in mico-ROS (Using docker)

Issue template

• Hardware description: docker, Ubuntu 22.04
• RTOS:
• Installation type:
• Version or commit hash: humble

Steps to reproduce the issue

Hey, i have created a publisher and subscriber chain with micro-ROS nodes in a docker container , to analyze latencies. It works fine when i use the Agent. Now i want to use SHM. Therefore, i added "-DUCLIENT_PROFILE_SHARED_MEMORY=ON" to my colcon.meta. Do i still have to build the agent and the other steps like:

ros2 run micro_ros_setup build_firmware.sh
source install/local_setup.bash
ros2 run micro_ros_setup create_agent_ws.sh
ros2 run micro_ros_setup build_agent.sh
source install/local_setup.bash
ros2 run micro_ros_agent micro_ros_agent udp4 --port 8888 -v6

I am not using a microcontroller, does this still work.? I want to see how big the latency is with and without the Agent. I am using Cyclone DDS, is this maybe the problem?

All nodes are in the same container.

Are there any modifications I forgot to do ?

Expected behavior

Actual behavior

Additional information

Inizia con l'impostazione colcon.meta dell'issue e con i comandi micro_ros_setup e micro_ros_agent elencati. Controlla la documentazione del repository e le indicazioni di configurazione per Shared Memory, Docker e Cyclone DDS. Il lavoro è completato quando viene documentato se questa configurazione funziona senza un microcontrollore o Agent e vengono elencate tutte le modifiche necessarie.