feat(Makefile): set docker build flags via environment variable

Author: mboersma

grafana/Makefile

@@ -15,7 +15,7 @@ uninstall: kube-delete
 upgrade: kube-update
 
 docker-build:
-	docker build -t ${IMAGE} rootfs
+	docker build ${DOCKER_BUILD_FLAGS} -t ${IMAGE} rootfs
 	docker tag ${IMAGE} ${MUTABLE_IMAGE}
 
 clean: check-docker

influxdb/Makefile

@@ -15,7 +15,7 @@ uninstall: kube-delete
 upgrade: kube-update
 
 docker-build:
-	docker build -t ${IMAGE} rootfs
+	docker build ${DOCKER_BUILD_FLAGS} -t ${IMAGE} rootfs
 	docker tag ${IMAGE} ${MUTABLE_IMAGE}
 
 clean: check-docker
@@ -36,4 +36,4 @@ kube-delete: update-manifests
 
 kube-update: update-manifests
 	kubectl delete -f manifests/deis-monitor-influxdb-rc.tmp.yaml
-	kubectl create -f manifests/deis-monitor-influxdb-rc.tmp.yaml
+	kubectl create -f manifests/deis-monitor-influxdb-rc.tmp.yaml

telegraf/Makefile

@@ -15,7 +15,7 @@ uninstall: kube-delete
 upgrade: kube-update
 
 docker-build:
-	docker build --no-cache -t ${IMAGE} rootfs
+	docker build ${DOCKER_BUILD_FLAGS} -t ${IMAGE} rootfs
 	docker tag ${IMAGE} ${MUTABLE_IMAGE}
 
 clean: check-docker

telegraf/versioning.mk

@@ -19,4 +19,4 @@ docker-immutable-push:
 
 .PHONY: docker-mutable-push
 docker-mutable-push:
-	docker push ${MUTABLE_IMAGE}
+	docker push ${MUTABLE_IMAGE}