重构

scripts/backup-db.sh

@@ -0,0 +1,46 @@
+#!/usr/bin/env bash
+# 备份生产 Docker PostgreSQL 到 ./backups
+
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+# shellcheck source=scripts/deploy-lib.sh
+source "$SCRIPT_DIR/deploy-lib.sh"
+
+PREFIX="manual"
+
+usage() {
+  cat <<'EOF'
+用法: scripts/backup-db.sh [选项]
+
+选项:
+  --prefix NAME   备份文件名前缀，默认 manual
+  -h, --help      显示帮助
+
+示例:
+  ./scripts/backup-db.sh
+  ./scripts/backup-db.sh --prefix pre-release
+EOF
+}
+
+while [ $# -gt 0 ]; do
+  case "$1" in
+    --prefix)
+      PREFIX="${2:?缺少 --prefix 参数值}"
+      shift 2
+      ;;
+    -h|--help)
+      usage
+      exit 0
+      ;;
+    *)
+      die "未知参数: $1"
+      ;;
+  esac
+done
+
+cd "$ROOT"
+require_docker
+ensure_env_file || exit 1
+start_infra
+backup_database "$PREFIX"