Add STM32CubeIDE examples and test for build

test/cube/Makefile

@@ -0,0 +1,13 @@
+ROOT ?= $(realpath $(CURDIR)/../..)
+PROJECTS = $(wildcard ../../examples/stm32/nucleo-*-cube-*)
+DOCKER = docker run --rm -v $(ROOT):$(ROOT) -v $(CURDIR):/root -w $(CURDIR) 
+IMAGE ?= springrockconsulting/stm32cubeide:v1
+# image author did not set path, so a hardcoded reference to a variable name dir is needed
+
+all: $(PROJECTS)
+	$(DOCKER) $(IMAGE) /opt/st/stm32cubeide_1.12.0/headless-build.sh -data workspace -removeAll workspace
+
+$(PROJECTS): FORCE
+	$(DOCKER) $(IMAGE) /opt/st/stm32cubeide_1.12.0/headless-build.sh -data workspace -import $@ -cleanBuild $(@F)
+
+FORCE: