Add health check test image. (#918)

tests/images/healthcheck/build.sh

@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+# Copyright (c) Ansible Project
+# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+if [ ! -e main.go ]; then
+    echo "Must be run in a directory that contains main.go."
+    exit 1
+fi
+
+PROGRAMS="main is-healthy make-healthy"
+
+set -eux
+IMAGE_NAME="${1:-localhost/$(basename "$(pwd)"):latest}"
+podman manifest rm "${IMAGE_NAME}" || true
+podman image rm "${IMAGE_NAME}" || true
+buildah manifest create "${IMAGE_NAME}"
+for ARCH in amd64 arm64; do
+    for PROGRAM in ${PROGRAMS}; do
+        rm -f "${PROGRAM}-${ARCH}"
+        GOARCH="${ARCH}" go build -ldflags "-s -w" -o "${PROGRAM}-${ARCH}" "${PROGRAM}.go"
+    done
+
+    # Need format=docker for health checks to work
+    WORKING_CONTAINER="$(buildah from --arch "${ARCH}" --format docker scratch)"
+    for PROGRAM in ${PROGRAMS}; do
+        buildah copy "${WORKING_CONTAINER}" "${PROGRAM}-${ARCH}" "/${PROGRAM}"
+    done
+    buildah config --entrypoint '["/main"]' "${WORKING_CONTAINER}"
+    buildah config --healthcheck /is-healthy "${WORKING_CONTAINER}"
+    buildah config --healthcheck-interval 1s "${WORKING_CONTAINER}"
+    buildah config --healthcheck-retries 1 "${WORKING_CONTAINER}"
+    buildah config --healthcheck-start-period 10s "${WORKING_CONTAINER}"
+    buildah commit --format docker --manifest "${IMAGE_NAME}" "${WORKING_CONTAINER}"
+
+    for PROGRAM in ${PROGRAMS}; do
+        rm -f "${PROGRAM}-${ARCH}"
+    done
+done