Makefile to build multiarch function

Makefile

OPENFAAS_URL?=http://faasgw:31112
PLATFORMS:=linux/amd64,linux/arm/v7
REGISTRY:=docker.io

fname = $(lastword $(subst -, ,$1))

all-%: generate-% build-% deploy-%
        @echo faas-cli invoke -g $(OPENFAAS_URL) $(call fname, $@)


generate-%:
        $(eval function:=$(call fname, $@))
        @faas-cli build --shrinkwrap --image $(function) -f $(function).yml

build-%:
ifndef TAG
        $(eval TAG:=$(REGISTRY)/$(call fname, $@))
endif
        @cd build/$(call fname, $@) && \
                docker buildx build --platform $(PLATFORMS) -t $(TAG) --push .

deploy-%:
        @faas-cli deploy -f $(call fname, $@).yml -g $(OPENFAAS_URL)

.PHONY: deploy-% build-% generate-% all-%