add build-and-push-images.sh script (#693)

Makefile

@@ -15,6 +15,8 @@ KODATA = \
 	cmd/webhook/kodata/refs
 CODECOVERAGE_OUT = $(PROJECT_DIR)/coverprofile.out
 GITHUB_REPO_FULL_NAME = "aws/aws-node-termination-handler"
+ECR_PUBLIC_REGISTRY ?= "public.ecr.aws/aws-ec2"
+ECR_PUBLIC_REPOSITORY_ROOT = "aws-node-termination-handler-2"
 
 # Image URL to use all building/pushing image targets
 IMG ?= controller:latest
@@ -125,6 +127,10 @@ delete:  ## Delete controller from current kubernetes cluster.
 
 ##@ Release
 
+.PHONY: build-and-push-images
+build-and-push-images: $(KO) $(KODATA) ## Build controller and webhook images and push to ECR public repository.
+	@PATH="$(BIN_DIR):$(PATH)" $(PROJECT_DIR)/scripts/build-and-push-images.sh -r "$(ECR_PUBLIC_REGISTRY)/$(ECR_PUBLIC_REPOSITORY_ROOT)"
+
 .PHONY: create-release-prep-pr
 create-release-prep-pr: $(GUM) ## Update version numbers in documents and open a PR.
 	@PATH="$(BIN_DIR):$(PATH)" $(PROJECT_DIR)/scripts/prepare-for-release.sh
@@ -141,3 +147,5 @@ latest-release-tag: ## Get tag of most recent release.
 repo-full-name: ## Get the full name of the GitHub repository for Node Termination Handler.
 	@echo "$(GITHUB_REPO_FULL_NAME)"
 
+.PHONY: version
+version: latest-release-tag ## Get the most recent release version.

scripts/build-and-push-images.sh

@@ -0,0 +1,71 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+repo_root_path="$(cd "$(dirname "$0")"; cd ..; pwd -P)"
+makefile_path="${repo_root_path}/Makefile"
+
+if ! command -v ko >/dev/null; then
+    echo "error: required executable 'ko' not found" >&2
+    exit 1
+fi
+
+version="$(make -s -f "${makefile_path}" version)"
+platforms="linux/amd64"
+image_repository="${KO_DOCKER_REPO}"
+goproxy="direct|https://proxy.golang.org"
+
+usage=$(cat << EOM
+usage: $(basename $0) -h | [-p PLATFORMS] [-r REPOSITORY] [-v VERSION]
+
+    Build and push Docker images for each platform.
+
+    Optional:
+        -h             Display this help message then exit.
+        -g GOPROXY     See documentation in "go help environment". Defaults to "${goproxy}".
+        -p PLATFORMS   Comma separated list of OS and Arch identifiers, e.g. "linux/amd64,linux/arm64". Defaults to "${platforms}".
+        -r REPOSITORY  Image repository to push the built images. Defaults to "${image_repository}".
+        -v VERSION     Version to include in tag of docker image. Defaults "${version}".
+
+EOM
+)
+
+while getopts "g:p:r:v:h" opt; do
+    case "${opt}" in
+        g ) goproxy="${OPTARG}"
+            ;;
+        p ) platforms="${OPTARG}"
+            ;;
+        r ) image_repository="${OPTARG}"
+            ;;
+        v ) version="${OPTARG}"
+            ;;
+        h ) echo "${usage}"
+            exit 0
+            ;;
+        \?) echo "${usage}" >&2
+            exit 1
+            ;;
+    esac
+done
+
+assert_not_empty() {
+    if [[ -z "${!1}" ]]; then
+        echo "error: missing argument ${1}" >&2
+        echo "${usage}" >&2
+        exit 1
+    fi
+}
+
+assert_not_empty goproxy
+assert_not_empty platforms
+assert_not_empty image_repository
+assert_not_empty version
+
+for app in "controller" "webhook"; do
+    GOPROXY="${goproxy}" KO_DOCKER_REPO="${image_repository}" ko publish \
+        --base-import-paths \
+        --tags "${version}" \
+        --platform "${platforms}" \
+        "github.com/aws/aws-node-termination-handler/cmd/${app}"
+done