Add an image for kubectl

Signed-off-by: Davanum Srinivas <[email protected]>

build/common.sh

@@ -105,6 +105,7 @@ readonly KUBE_APISERVER_BASE_IMAGE="${KUBE_APISERVER_BASE_IMAGE:-$KUBE_GORUNNER_
 readonly KUBE_CONTROLLER_MANAGER_BASE_IMAGE="${KUBE_CONTROLLER_MANAGER_BASE_IMAGE:-$KUBE_GORUNNER_IMAGE}"
 readonly KUBE_SCHEDULER_BASE_IMAGE="${KUBE_SCHEDULER_BASE_IMAGE:-$KUBE_GORUNNER_IMAGE}"
 readonly KUBE_PROXY_BASE_IMAGE="${KUBE_PROXY_BASE_IMAGE:-$KUBE_BASE_IMAGE_REGISTRY/distroless-iptables:$__default_distroless_iptables_version}"
+readonly KUBECTL_BASE_IMAGE="${KUBECTL_BASE_IMAGE:-$KUBE_GORUNNER_IMAGE}"
 
 # This is the image used in a multi-stage build to apply capabilities to Docker-wrapped binaries.
 readonly KUBE_BUILD_SETCAP_IMAGE="${KUBE_BUILD_SETCAP_IMAGE:-$KUBE_BASE_IMAGE_REGISTRY/setcap:$__default_setcap_version}"
@@ -124,6 +125,7 @@ kube::build::get_docker_wrapped_binaries() {
     "kube-controller-manager,${KUBE_CONTROLLER_MANAGER_BASE_IMAGE}"
     "kube-scheduler,${KUBE_SCHEDULER_BASE_IMAGE}"
     "kube-proxy,${KUBE_PROXY_BASE_IMAGE}"
+    "kubectl,${KUBECTL_BASE_IMAGE}"
   )
 
   echo "${targets[@]}"

build/server-image/kubectl/Dockerfile

@@ -0,0 +1,23 @@
+# Copyright 2023 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.
+
+# Dockerfile used for the kubectl image.
+
+ARG BASEIMAGE
+ARG BINARY
+
+
+FROM "${BASEIMAGE}"
+COPY ${BINARY} /bin/
+ENTRYPOINT ["/bin/kubectl"]

hack/lib/golang.sh

@@ -95,6 +95,7 @@ kube::golang::server_image_targets() {
     cmd/kube-controller-manager
     cmd/kube-scheduler
     cmd/kube-proxy
+    cmd/kubectl
   )
   echo "${targets[@]}"
 }