add push / build scripts for base-image

hack/release/build/push-base.sh

@@ -1,33 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2018 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.
-
-set -o errexit -o nounset -o pipefail
-
-# cd to the repo root
-REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/../../.." && pwd -P)"
-cd "${REPO_ROOT}"
-
-# ensure we have up to date kind
-make build
-
-# generate tag
-TAG="$(date +v%Y%m%d)-$(git describe --always --dirty)"
-IMAGE="kindest/base:${TAG}"
-
-# build
-(set -x; "${REPO_ROOT}/bin/kind" build base-image --image="${IMAGE}" --source="${REPO_ROOT}/images/base/")
-
-# push
-docker push "${IMAGE}"