Makefile: remove experimental push-multiarch

The target has been moved to release-tools/build.make.

Makefile

@@ -18,66 +18,3 @@ CMDS=csi-node-driver-registrar
 all: build
 
 include release-tools/build.make
-
-# Additional parameters are needed when pushing to a local registry,
-# see https://github.com/docker/buildx/issues/94.
-# However, that then runs into https://github.com/docker/cli/issues/2396.
-#
-# What works for local testing is:
-# make push-multiarch PULL_BASE_REF=master REGISTRY_NAME=<your account on dockerhub.io> BUILD_PLATFORMS="linux amd64; windows amd64 .exe; linux ppc64le -ppc64le; linux s390x -s390x"
-DOCKER_BUILDX_CREATE_ARGS ?=
-
-# This target builds a multiarch image for one command using Moby BuildKit builder toolkit.
-# Docker Buildx is included in Docker 19.03.
-#
-# ./cmd/<command>/Dockerfile[.Windows] is used if found, otherwise Dockerfile[.Windows].
-# BUILD_PLATFORMS determines which individual images are included in the multiarch image.
-# PULL_BASE_REF must be set to 'master', 'release-x.y', or a tag name, and determines
-# the tag for the resulting multiarch image.
-push-multiarch-%: check-pull-base-ref build-%
-	set -ex; \
-	DOCKER_CLI_EXPERIMENTAL=enabled; \
-	export DOCKER_CLI_EXPERIMENTAL; \
-	docker buildx create $(DOCKER_BUILDX_CREATE_ARGS) --use --name multiarchimage-buildertest; \
-	trap "docker buildx rm multiarchimage-buildertest" EXIT; \
-	dockerfile_linux=$$(if [ -e ./cmd/$*/Dockerfile ]; then echo ./cmd/$*/Dockerfile; else echo Dockerfile; fi); \
-	dockerfile_windows=$$(if [ -e ./cmd/$*/Dockerfile.Windows ]; then echo ./cmd/$*/Dockerfile.Windows; else echo Dockerfile.Windows; fi); \
-	if [ '$(BUILD_PLATFORMS)' ]; then build_platforms='$(BUILD_PLATFORMS)'; else build_platforms="linux amd64"; fi; \
-	pushMultiArch () { \
-		tag=$$1; \
-		echo "$$build_platforms" | tr ';' '\n' | while read -r os arch suffix; do \
-			docker buildx build --push \
-				--tag $(IMAGE_NAME):$$arch-$$os-$$tag \
-				--platform=$$os/$$arch \
-				--file $$(eval echo \$${dockerfile_$$os}) \
-				--build-arg binary=./bin/$*$$suffix \
-				--label revision=$(REV) \
-				.; \
-		done; \
-		images=$$(echo "$$build_platforms" | tr ';' '\n' | while read -r os arch suffix; do echo $(IMAGE_NAME):$$arch-$$os-$$tag; done); \
-		docker manifest create --amend $(IMAGE_NAME):$$tag $$images; \
-		docker manifest push -p $(IMAGE_NAME):$$tag; \
-	}; \
-	if [ $(PULL_BASE_REF) = "master" ]; then \
-		       : "creating or overwriting canary image"; \
-		       pushMultiArch canary; \
-	elif echo $(PULL_BASE_REF) | grep -q -e 'release-*' ; then \
-		       : "creating or overwriting canary image for release branch"; \
-			release_canary_tag=$$(echo $(PULL_BASE_REF) | cut -f2 -d '-')-canary; \
-			pushMultiArch $$release_canary_tag; \
-	elif docker pull $(IMAGE_NAME):$(PULL_BASE_REF) 2>&1 | tee /dev/stderr | grep -q "manifest for $(IMAGE_NAME):$(PULL_BASE_REF) not found"; then \
-		       : "creating release image"; \
-		       pushMultiArch $(PULL_BASE_REF); \
-	else \
-			: "ERROR: release image $(IMAGE_NAME):$(PULL_BASE_REF) already exists: a new tag is required!"; \
-			exit 1; \
-	fi; \
-
-.PHONY: check-pull-base-ref
-check-pull-base-ref:
-	if ! [ "$(PULL_BASE_REF)" ]; then \
-		echo >&2 "ERROR: PULL_BASE_REF must be set to 'master', 'release-x.y', or a tag name."; \
-		exit 1; \
-	fi
-
-push-multiarch: $(CMDS:%=push-multiarch-%)