Add missing Python build dependencies to Docker setup

Added python3-pip, python3-colcon-common-extensions, and iproute2
to Docker container setup instructions. These are required for colcon
build to work properly in the ros:humble-ros-base container.

Co-Authored-By: Claude <noreply@anthropic.com>

Author: yconst

README.md

@@ -123,6 +123,9 @@ docker exec -it tinymovr_ros2 bash
 
 # Inside container: Install dependencies
 apt update && apt install -y \
+  python3-pip \
+  python3-colcon-common-extensions \
+  iproute2 \
   ros-humble-ros2-control \
   ros-humble-ros2-controllers \
   ros-humble-xacro \

docker_run.sh

@@ -32,7 +32,7 @@ echo "Container started. To enter the container:"
 echo "  docker exec -it tinymovr_ros2 bash"
 echo ""
 echo "Once inside, build and run your robot:"
-echo "  apt update && apt install -y ros-humble-ros2-control ros-humble-ros2-controllers ros-humble-xacro ros-humble-robot-state-publisher ros-humble-teleop-twist-keyboard"
+echo "  apt update && apt install -y python3-pip python3-colcon-common-extensions iproute2 ros-humble-ros2-control ros-humble-ros2-controllers ros-humble-xacro ros-humble-robot-state-publisher ros-humble-teleop-twist-keyboard"
 echo "  cd /workspace"
 echo "  source /opt/ros/humble/setup.bash"
 echo "  colcon build --packages-select tinymovr_ros"