Fix CI no space left on device (micro-ROS#157) (micro-ROS#160)

* Free space in docker



* Build script as step



* Nightly



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Signed-off-by: Eugenio Collado <eugeniocollado@eprosima.com>
Co-authored-by: EugenioCollado <121509066+EugenioCollado@users.noreply.github.com>

Author: mergify[bot]

libmicroros.mk

@@ -67,6 +67,7 @@ $(COMPONENT_PATH)/micro_ros_dev/install:
 	git clone -b jazzy https://github.com/ament/googletest src/googletest; \
 	git clone -b jazzy https://github.com/ros2/ament_cmake_ros src/ament_cmake_ros; \
 	git clone -b jazzy https://github.com/ament/ament_index src/ament_index; \
+	touch src/ament_cmake_ros/rmw_test_fixture/COLCON_IGNORE; \
 	colcon build --cmake-args -DBUILD_TESTING=OFF;
 
 $(COMPONENT_PATH)/micro_ros_src/src: