添加 Docker 镜像推送脚本

.gitignore

@@ -549,3 +549,6 @@ backend/desc.md
 
 # Claude Code
 .claude/
+
+# Registry credentials
+.env.registry

backend/scripts/push-image.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+ENV_FILE="${SCRIPT_DIR}/../.env.registry"
+REGISTRY="registry.fishestlife.com"
+
+if [[ ! -f "$ENV_FILE" ]]; then
+    echo "错误：找不到 ${ENV_FILE}"
+    echo "请从模板创建并填入账号密码"
+    exit 1
+fi
+
+# shellcheck source=/dev/null
+source "$ENV_FILE"
+
+if [[ -z "${REGISTRY_USER:-}" || -z "${REGISTRY_PASS:-}" ]]; then
+    echo "错误：REGISTRY_USER 或 REGISTRY_PASS 未设置"
+    echo "请编辑 ${ENV_FILE} 填入凭证"
+    exit 1
+fi
+
+echo "登录镜像仓库 ${REGISTRY} ..."
+echo "$REGISTRY_PASS" | docker login "$REGISTRY" -u "$REGISTRY_USER" --password-stdin
+
+# 推送参数：镜像名:标签
+IMAGE="${1:-}"
+if [[ -z "$IMAGE" ]]; then
+    echo "用法：$0 <镜像名:标签>"
+    echo "示例：$0 user-service:latest"
+    exit 1
+fi
+
+echo "推送镜像 ${IMAGE} ..."
+docker push "${REGISTRY}/${IMAGE}"
+
+echo "完成：${REGISTRY}/${IMAGE}"