Add containerized staging deployment

deploy/bootstrap-staging.sh

@@ -0,0 +1,29 @@
+#!/bin/sh
+set -eu
+
+bundle_path=${1:-}
+deployment_directory=${2:-/opt/shd-build-stage}
+if [ -z "$bundle_path" ] || [ ! -f "$bundle_path" ]; then
+	echo "Usage: bootstrap-staging.sh <bootstrap-bundle.json> [deployment-directory]" >&2
+	exit 2
+fi
+
+compose_file="$deployment_directory/compose.staging.yml"
+deploy_environment="$deployment_directory/.env.deploy"
+compose() {
+	docker compose --env-file "$deploy_environment" -f "$compose_file" "$@"
+}
+restart_services() {
+	compose up -d --no-build app scheduler
+}
+trap restart_services EXIT
+
+echo "Stopping staging before the one-time database bootstrap."
+compose stop scheduler app || true
+compose run --rm --no-deps \
+	-e ALLOW_STAGING_BOOTSTRAP=true \
+	-v "$bundle_path:/import/staging-bootstrap.json:ro" \
+	app node scripts/stage-bootstrap-import.mjs \
+	/import/staging-bootstrap.json --confirm-empty-staging-replace
+
+echo "Staging bootstrap completed."