Add --pull. (#419)

Author: donatwork

docker.mk

@@ -47,13 +47,13 @@ docker: download-csm-common
 	$(eval include csm-common.mk)
 	@echo "MAJOR $(MAJOR) MINOR $(MINOR) PATCH $(PATCH) RELNOTE $(RELNOTE) SEMVER $(SEMVER)"
 	@echo "$(DOCKER_FILE)"
-	$(BUILDER) build -f $(DOCKER_FILE) -t "$(DOCKER_REGISTRY)/$(DOCKER_IMAGE_NAME):v$(MAJOR).$(MINOR).$(PATCH)$(RELNOTE)" --build-arg GOIMAGE=$(DEFAULT_GOIMAGE) --build-arg BASEIMAGE=$(CSM_BASEIMAGE) .
+	$(BUILDER) build --pull -f $(DOCKER_FILE) -t "$(DOCKER_REGISTRY)/$(DOCKER_IMAGE_NAME):v$(MAJOR).$(MINOR).$(PATCH)$(RELNOTE)" --build-arg GOIMAGE=$(DEFAULT_GOIMAGE) --build-arg BASEIMAGE=$(CSM_BASEIMAGE) .
 
 docker-no-cache: download-csm-common
 	$(eval include csm-common.mk)
 	@echo "MAJOR $(MAJOR) MINOR $(MINOR) PATCH $(PATCH) RELNOTE $(RELNOTE) SEMVER $(SEMVER)"
 	@echo "$(DOCKER_FILE) --no-cache"
-	$(BUILDER) build --no-cache -f $(DOCKER_FILE) -t "$(DOCKER_REGISTRY)/$(DOCKER_IMAGE_NAME):v$(MAJOR).$(MINOR).$(PATCH)$(RELNOTE)" --build-arg GOIMAGE=$(DEFAULT_GOIMAGE) --build-arg BASEIMAGE=$(CSM_BASEIMAGE) .
+	$(BUILDER) build --pull --no-cache -f $(DOCKER_FILE) -t "$(DOCKER_REGISTRY)/$(DOCKER_IMAGE_NAME):v$(MAJOR).$(MINOR).$(PATCH)$(RELNOTE)" --build-arg GOIMAGE=$(DEFAULT_GOIMAGE) --build-arg BASEIMAGE=$(CSM_BASEIMAGE) .
 
 push:
 	echo "MAJOR $(MAJOR) MINOR $(MINOR) PATCH $(PATCH) RELNOTE $(RELNOTE) SEMVER $(SEMVER)"