feat(deploy): add Ubuntu 26.04 production package

infra/ubuntu/scripts/rollback.sh

@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+set -Eeuo pipefail
+
+# shellcheck source=lib.sh
+source "$(dirname -- "${BASH_SOURCE[0]}")/lib.sh"
+
+env_file="${1:-/etc/lehuo/lehuo.env}"
+require_env_file "$env_file"
+release_dir='/opt/lehuo/releases'
+[[ -f "$release_dir/previous" ]] || { echo '没有可回滚的上一镜像标签。' >&2; exit 1; }
+
+previous_tag="$(<"$release_dir/previous")"
+current_tag="$(<"$release_dir/current")"
+[[ -n "$previous_tag" && "$previous_tag" != 'latest' ]] || { echo '上一镜像标签无效。' >&2; exit 1; }
+
+if ! docker image inspect "lehuo-api:${previous_tag}" >/dev/null 2>&1 || ! docker image inspect "lehuo-admin:${previous_tag}" >/dev/null 2>&1; then
+  echo '上一版本镜像在本机不存在，停止回滚。' >&2
+  exit 1
+fi
+
+echo '注意：此操作只回滚应用镜像，不回滚数据库。migration 必须保持向后兼容。'
+IMAGE_TAG="$previous_tag" compose "$env_file" up -d --no-build api web
+bash "$(dirname -- "${BASH_SOURCE[0]}")/smoke.sh" "$env_file"
+printf '%s\n' "$previous_tag" > "$release_dir/current"
+printf '%s\n' "$current_tag" > "$release_dir/previous"
+chmod 600 "$release_dir/current" "$release_dir/previous"
+printf '应用已回滚到：%s\n' "$previous_tag"