prepare first release with graceful shutdown + containerfile + push to

hub script

scripts/build.sh

@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+IMAGE="tintounn/herald"
+
+if [ -z "${CI_COMMIT_TAG:-}" ]; then
+    echo "Error: CI_COMMIT_TAG is not set" >&2
+    exit 1
+fi
+
+TAG="${CI_COMMIT_TAG}"
+
+echo "Building ${IMAGE}:${TAG}..."
+buildah build \
+    --file Containerfile \
+    --tag "docker.io/${IMAGE}:${TAG}" \
+    .
+
+echo "Pushing ${IMAGE}:${TAG}..."
+buildah push "${IMAGE}:${TAG}"
+
+echo "Done: ${IMAGE}:${TAG}"