turtlebot3_integration: Docker build fails — missing ROS2MedkitCompat.cmake

[victorsolaz]

Which demo

turtlebot3_integration

Steps to reproduce

1. Clone the repository
2. Run cd demos/turtlebot3_integration && bash run-demo.sh --headless
3. Docker build fails during colcon build at the ros2_medkit_serialization package

Expected behavior

The Docker image builds successfully and the demo launches.

Actual behavior

The build fails with the following error:

--- stderr: ros2_medkit_serialization
CMake Error at CMakeLists.txt:10 (include):
  include could not find requested file:

    ROS2MedkitCompat


CMake Error at CMakeLists.txt:34 (medkit_find_yaml_cpp):
  Unknown CMake command "medkit_find_yaml_cpp".

---
Failed   <<< ros2_medkit_serialization [1.45s, exited with code 1]

Root cause

Same root cause as #28: the Dockerfile clones ros2_medkit, extracts individual packages from ros2_medkit/src/ into ${COLCON_WS}/src/, and then deletes the entire clone with rm -rf ros2_medkit. The shared ros2_medkit/cmake/ROS2MedkitCompat.cmake module — referenced by multiple packages via ../../cmake relative paths — is not preserved before deletion.

Proposed fix

Add a line to preserve the CMake module before removing the clone:

 RUN git clone --depth 1 https://github.com/selfpatch/ros2_medkit.git && \
     mv ros2_medkit/src/ros2_medkit_gateway . && \
     mv ros2_medkit/src/ros2_medkit_msgs . && \
     mv ros2_medkit/src/ros2_medkit_serialization . && \
     mv ros2_medkit/src/ros2_medkit_fault_manager . && \
     mv ros2_medkit/src/ros2_medkit_fault_reporter . && \
     mv ros2_medkit/src/ros2_medkit_diagnostic_bridge . && \
+    mkdir -p ${COLCON_WS}/cmake && mv ros2_medkit/cmake/ROS2MedkitCompat.cmake ${COLCON_WS}/cmake/ && \
     rm -rf ros2_medkit

This places ROS2MedkitCompat.cmake at ${COLCON_WS}/cmake/, which is exactly where the relative ../../cmake paths from packages in ${COLCON_WS}/src/<pkg>/ resolve to. The fix has been tested locally — all 7 packages build successfully and the demo launches correctly.

Environment

• ROS 2 distro: Jazzy
• OS: Ubuntu 24.04 on WSL 2
• ros2_medkit version: latest (HEAD of main)