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Merge pull request #1684 from vinayakankugoyal/setcap
Adding setcap image so that capabilities can be applied to
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# Copyright 2021 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. | ||
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ARG BASEIMAGE | ||
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FROM ${BASEIMAGE} | ||
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RUN apt-get update && apt-get -y --no-install-recommends install libcap2-bin |
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# Copyright 2021 The Kubernetes Authors. | ||
# | ||
# Licensed under the Apache License, Version 2.0 (the "License"); | ||
# you may not use this file except in compliance with the License. | ||
# You may obtain a copy of the License at | ||
# | ||
# http://www.apache.org/licenses/LICENSE-2.0 | ||
# | ||
# Unless required by applicable law or agreed to in writing, software | ||
# distributed under the License is distributed on an "AS IS" BASIS, | ||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
# See the License for the specific language governing permissions and | ||
# limitations under the License. | ||
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.PHONY: build push all all-build all-push-images all-push push-manifest | ||
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REGISTRY?="gcr.io/k8s-staging-build-image" | ||
IMAGE=$(REGISTRY)/setcap | ||
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TAG ?= $(shell git describe --tags --always --dirty) | ||
IMAGE_VERSION ?= buster-v1.4.0 | ||
CONFIG ?= buster | ||
DEBIAN_BASE_VERSION ?= buster-v1.4.0 | ||
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ARCH?=amd64 | ||
ALL_ARCH = amd64 arm arm64 ppc64le s390x | ||
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BASE_REGISTRY?=k8s.gcr.io/build-image | ||
BASEIMAGE?=$(BASE_REGISTRY)/debian-base-$(ARCH):$(DEBIAN_BASE_VERSION) | ||
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# Build args | ||
QEMUVERSION=5.2.0-2 | ||
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# This option is for running docker manifest command | ||
export DOCKER_CLI_EXPERIMENTAL := enabled | ||
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build: | ||
ifneq ($(ARCH),amd64) | ||
# Register /usr/bin/qemu-ARCH-static as the handler for non-x86 binaries in the kernel | ||
docker run --rm --privileged multiarch/qemu-user-static:$(QEMUVERSION) --reset -p yes | ||
docker buildx version | ||
BUILDER=$(shell docker buildx create --use) | ||
endif | ||
docker buildx build \ | ||
--pull \ | ||
--load \ | ||
--platform linux/$(ARCH) \ | ||
-t $(IMAGE)-$(ARCH):$(IMAGE_VERSION) \ | ||
-t $(IMAGE)-$(ARCH):$(TAG)-$(CONFIG) \ | ||
-t $(IMAGE)-$(ARCH):latest-$(CONFIG) \ | ||
--build-arg=BASEIMAGE=$(BASEIMAGE) \ | ||
. | ||
ifneq ($(ARCH),amd64) | ||
docker buildx rm $$BUILDER | ||
endif | ||
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push: build | ||
docker push $(IMAGE)-$(ARCH):$(IMAGE_VERSION) | ||
docker push $(IMAGE)-$(ARCH):$(TAG)-$(CONFIG) | ||
docker push $(IMAGE)-$(ARCH):latest-$(CONFIG) | ||
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sub-build-%: | ||
$(MAKE) ARCH=$* build | ||
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all-build: $(addprefix sub-build-,$(ALL_ARCH)) | ||
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sub-push-image-%: | ||
$(MAKE) ARCH=$* push | ||
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all-push-images: $(addprefix sub-push-image-,$(ALL_ARCH)) | ||
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all-push: all-push-images push-manifest | ||
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push-manifest: | ||
docker manifest create --amend $(IMAGE):$(IMAGE_VERSION) $(shell echo $(ALL_ARCH) | sed -e "s~[^ ]*~$(IMAGE)\-&:$(IMAGE_VERSION)~g") | ||
@for arch in $(ALL_ARCH); do docker manifest annotate --arch $${arch} ${IMAGE}:${IMAGE_VERSION} ${IMAGE}-$${arch}:${IMAGE_VERSION}; done | ||
docker manifest push --purge ${IMAGE}:${IMAGE_VERSION} | ||
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all: all-push | ||
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setcap | ||
This image is based on debian-base and installs the libcap2-bin package. The | ||
main use of this image is to apply `CAP_NET_BIND_SERVICE` to the kube-apiserver | ||
binary so that it can a bind to ports less than 1024 and still be run as non | ||
root. | ||
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This image is compiled for multiple architectures. | ||
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How to release | ||
If you're editing the Dockerfile or some other thing, please bump the TAG in the Makefile. | ||
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Build and push images for all the architectures | ||
$ make all-push | ||
# ---> staging-k8s.gcr.io/setcap-amd64:TAG | ||
# ---> staging-k8s.gcr.io/setcap-arm:TAG | ||
# ---> staging-k8s.gcr.io/setcap-arm64:TAG | ||
# ---> staging-k8s.gcr.io/setcap-ppc64le:TAG | ||
# ---> staging-k8s.gcr.io/setcap-s390x:TAG | ||
If you don't want to push the images, run `make sub-build-{target_arch}` or `make all-build` instead |
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# See https://cloud.google.com/cloud-build/docs/build-config | ||
timeout: 1200s | ||
options: | ||
substitution_option: ALLOW_LOOSE | ||
machineType: 'N1_HIGHCPU_8' | ||
steps: | ||
- name: 'gcr.io/k8s-testimages/gcb-docker-gcloud:v20201130-750d12f' | ||
entrypoint: bash | ||
dir: ./images/build/setcap | ||
env: | ||
- DOCKER_CLI_EXPERIMENTAL=enabled | ||
- REGISTRY=gcr.io/$PROJECT_ID | ||
- IMAGE=gcr.io/$PROJECT_ID/setcap | ||
- TAG=$_GIT_TAG | ||
- PULL_BASE_REF=$_PULL_BASE_REF | ||
- IMAGE_VERSION=$_IMAGE_VERSION | ||
- CONFIG=$_CONFIG | ||
- DEBIAN_BASE_VERSION=$_DEBIAN_BASE_VERSION | ||
- HOME=/root # for docker buildx | ||
args: | ||
- -c | ||
- | | ||
gcloud auth configure-docker && \ | ||
make all-push | ||
substitutions: | ||
# _GIT_TAG will be filled with a git-based tag for the image, of the form vYYYYMMDD-hash, and | ||
# can be used as a substitution | ||
_GIT_TAG: '12345' | ||
_PULL_BASE_REF: 'dev' | ||
_IMAGE_VERSION: 'v0.0.0' | ||
_CONFIG: 'codename' | ||
_DEBIAN_BASE_VERSION: 'v0.0.0' | ||
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tags: | ||
- 'setcap' | ||
- ${_GIT_TAG} | ||
- ${_PULL_BASE_REF} | ||
- ${_IMAGE_VERSION} | ||
- ${_CONFIG} | ||
- ${_DEBIAN_BASE_VERSION} | ||
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images: | ||
- 'gcr.io/$PROJECT_ID/setcap-amd64:$_IMAGE_VERSION' | ||
- 'gcr.io/$PROJECT_ID/setcap-amd64:$_GIT_TAG-$_CONFIG' | ||
- 'gcr.io/$PROJECT_ID/setcap-amd64:latest-$_CONFIG' |
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variants: | ||
buster: | ||
CONFIG: 'buster' | ||
IMAGE_VERSION: 'buster-v1.4.0' | ||
DEBIAN_BASE_VERSION: 'buster-v1.4.0' |