Improvements to Docker build

Makefile

@@ -95,6 +95,11 @@ docker-build:
 	docker run --rm -v "$(CURDIR)/builds:/builds" \
 				    -v "$(CURDIR)/in-docker-build.sh:/in-docker-build.sh" \
 				    $(DOCKER_IMAGE) "./in-docker-build.sh" $(SOLO_VERSIONISH)
+uncached-docker-build:
+	docker build --no-cache -t $(DOCKER_IMAGE) .
+	docker run --rm -v "$(CURDIR)/builds:/builds" \
+				    -v "$(CURDIR)/in-docker-build.sh:/in-docker-build.sh" \
+				    $(DOCKER_IMAGE) "./in-docker-build.sh" $(SOLO_VERSIONISH)
 
 CPPCHECK_FLAGS=--quiet --error-exitcode=2
 

in-docker-build.sh

@@ -7,6 +7,7 @@ export PREFIX=/opt/gcc-arm-none-eabi-8-2018-q4-major/bin/
 cd /solo/targets/stm32l432
 git fetch --tags
 git checkout ${version}
+git submodule update --init --recursive
 version=$(git describe)
 
 make cbor