Remove flannel because now everything here is upstreamed; multiarch is a thing…

cluster/images/flannel/Dockerfile

-# Copyright 2016 The Kubernetes Authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-FROM BASEIMAGE
-
-COPY flanneld /opt/bin/
-COPY mk-docker-opts.sh /opt/bin/
-
-CMD ["/opt/bin/flanneld"]

cluster/images/flannel/Makefile

-# Copyright 2016 The Kubernetes Authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Build the flannel image
-#
-# Usage:
-# 	[TAG=0.5.5] [REGISTRY=gcr.io/google_containers] [ARCH=amd64] make build
-
-TAG?=0.5.5
-ARCH?=amd64
-REGISTRY?=gcr.io/google_containers
-KUBE_CROSS_TAG=$(shell cat ../../../build-image/cross/VERSION)
-GOARM=6
-TEMP_DIR:=$(shell mktemp -d)
-BASEIMAGE?=gcr.io/google_containers/debian-iptables-${ARCH}:v2
-
-ifeq ($(ARCH),arm)
-	CC=arm-linux-gnueabi-gcc
-endif
-ifeq ($(ARCH),arm64)
-	CC=aarch64-linux-gnu-gcc
-endif
-ifeq ($(ARCH),ppc64le)
-	CC=powerpc64le-linux-gnu-gcc
-endif
-
-build:
-ifeq ($(ARCH),amd64)
-	# If we should build an amd64 flannel image, go with the official one
-	docker pull quay.io/coreos/flannel:$(TAG)
-
-	docker tag -f quay.io/coreos/flannel:$(TAG) $(REGISTRY)/flannel-$(ARCH):$(TAG)
-else
-	# Copy the content in this dir to the temp dir
-	cp ./* $(TEMP_DIR)
-
-	docker run -it -v $(TEMP_DIR):/flannel/bin gcr.io/google_containers/kube-cross:$(KUBE_CROSS_TAG) /bin/bash -c \
-		"curl -sSL https://github.com/coreos/flannel/archive/v${TAG}.tar.gz | tar -C /flannel -xz --strip-components=1 \
-		&& cd /flannel && GOARM=$(GOARM) GOARCH=$(ARCH) CC=$(CC) CGO_ENABLED=1 ./build"
-
-	# Replace BASEIMAGE with the real base image
-	cd $(TEMP_DIR) && sed -i "s|BASEIMAGE|$(BASEIMAGE)|g" Dockerfile
-
-	# Download mk-docker-opts.sh
-	curl -sSL https://raw.githubusercontent.com/coreos/flannel/v$(TAG)/dist/mk-docker-opts.sh > $(TEMP_DIR)/mk-docker-opts.sh
-
-	# And build the image
-	docker build -t $(REGISTRY)/flannel-$(ARCH):$(TAG) $(TEMP_DIR)
-endif
-
-push: build
-	gcloud docker push $(REGISTRY)/flannel-$(ARCH):$(TAG)
-
-all: build
-.PHONY: build push

cluster/images/flannel/README.md

-### flannel
-
-This is used mostly for the `docker-multinode` config, but also in other places where flannel runs in a container.
-
-For `amd64`, this image equals to `quay.io/coreos/flannel` to maintain official support.
-For other architectures, `flannel` is cross-compiled. The `debian-iptables` image serves as base image.
-
-#### How to release
-
-```console
-# Build for linux/amd64 (default)
-$ make push ARCH=amd64
-# ---> gcr.io/google_containers/flannel-amd64:TAG
-
-$ make push ARCH=arm
-# ---> gcr.io/google_containers/flannel-arm:TAG
-
-$ make push ARCH=arm64
-# ---> gcr.io/google_containers/flannel-arm64:TAG
-
-$ make push ARCH=ppc64le
-# ---> gcr.io/google_containers/flannel-ppc64le:TAG
-```
-
-If you don't want to push the images, run `make` or `make build` instead
-
-
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