ci: Fix entrypoint execution on devcontainer entry

.devcontainer/Dockerfile

@@ -42,3 +42,4 @@ COPY entrypoint.sh /
 RUN chmod +x /entrypoint.sh
 
 ENTRYPOINT ["/entrypoint.sh"]
+CMD ["/bin/bash"]

.devcontainer/devcontainer.json

@@ -5,6 +5,8 @@
     "dockerfile": "Dockerfile"
   },
   "runArgs": ["-v", ".:/workspace"],
+  "overrideCommand": true,
+  "postStartCommand": ". /entrypoint.sh",
   "customizations": {
     "vscode": {
       "extensions": [

.devcontainer/entrypoint.sh

@@ -1,6 +1,9 @@
 #!/bin/bash
 
 # Build the package mounted in the container
+echo "Building workspace with colcon"
 . /opt/ros/humble/setup.sh && . /ros_deps/install/setup.sh && colcon build
 echo "source /workspace/install/setup.sh" >> /root/.bashrc
-/bin/bash
+
+# Run the CMD (either the default from the Dockerfile or the one provided as docker run argument)
+exec "$@"