docs: add prebuilt image deployment guide

README.md

@@ -71,22 +71,42 @@ This project provides two Docker deployment methods:
 Use `docker-compose-all.yaml` to start all services at once (including backend, admin panel, user frontend, and dependencies):
 
 ```bash
-# Clone the repository
-git clone https://github.com/ageerle/ruoyi-ai.git
+# Requirements: Docker Engine and Docker Compose V2
+
+# Clone the v3.1.0 release
+git clone --depth 1 --branch v3.1.0 https://github.com/ageerle/ruoyi-ai.git
 cd ruoyi-ai
 
-# Start all services (pull pre-built images from GHCR)
-docker compose -f docs/docker/ruoyi-ai/docker-compose-all.yaml up -d
+# Pin the image version. Public GHCR images do not require docker login.
+cp docs/docker/ruoyi-ai/.env.example docs/docker/ruoyi-ai/.env
+sed -i 's/^RUIYI_VERSION=.*/RUIYI_VERSION=v3.1.0/' docs/docker/ruoyi-ai/.env
+
+# Pull pre-built images from GHCR and start all services
+docker compose --env-file docs/docker/ruoyi-ai/.env \
+  -f docs/docker/ruoyi-ai/docker-compose-all.yaml pull
+docker compose --env-file docs/docker/ruoyi-ai/.env \
+  -f docs/docker/ruoyi-ai/docker-compose-all.yaml up -d
 
 # Check service status
-docker compose -f docs/docker/ruoyi-ai/docker-compose-all.yaml ps
+docker compose --env-file docs/docker/ruoyi-ai/.env \
+  -f docs/docker/ruoyi-ai/docker-compose-all.yaml ps
 
-# Access services
-# Admin Panel: http://localhost:25666 (admin / admin123)
-# User Frontend: http://localhost:25137
-# Backend API: http://localhost:26039
+# Access services (replace SERVER_IP with the server address)
+# Admin Panel: http://SERVER_IP:25666 (admin / admin123)
+# User Frontend: http://SERVER_IP:25137
+# Backend API: http://SERVER_IP:26039
 ```
 
+The default Compose file also publishes MySQL (`23306`), Redis (`26379`),
+Weaviate (`28080`), and MinIO (`29000`/`29090`). For production deployments,
+change the default MySQL and MinIO passwords and expose only the application
+ports through the firewall or a reverse proxy.
+
+To upgrade to another published release, update `RUIYI_VERSION` in
+`docs/docker/ruoyi-ai/.env`, then run `docker compose pull` and
+`docker compose up -d` with the same `--env-file` and `-f` options. Do not use
+`docker compose down -v` unless you intend to delete persistent data volumes.
+
 ### Method 2: Step-by-step Deployment (Source Build)
 
 If you need to build backend services from source, follow these steps:

README_ZH.md

@@ -70,22 +70,39 @@
 使用 `docker-compose-all.yaml` 可以一键启动所有服务（包括后端、管理端、用户端及依赖服务）：
 
 ```bash
-# 克隆仓库
-git clone https://github.com/ageerle/ruoyi-ai.git
+# 环境要求：Docker Engine 和 Docker Compose V2
+
+# 克隆 v3.1.0 版本
+git clone --depth 1 --branch v3.1.0 https://github.com/ageerle/ruoyi-ai.git
 cd ruoyi-ai
 
-# 启动所有服务（从 GHCR 拉取预构建镜像）
-docker compose -f docs/docker/ruoyi-ai/docker-compose-all.yaml up -d
+# 固定镜像版本。GHCR 镜像已公开，无需 docker login
+cp docs/docker/ruoyi-ai/.env.example docs/docker/ruoyi-ai/.env
+sed -i 's/^RUIYI_VERSION=.*/RUIYI_VERSION=v3.1.0/' docs/docker/ruoyi-ai/.env
+
+# 从 GHCR 拉取预构建镜像并启动全部服务
+docker compose --env-file docs/docker/ruoyi-ai/.env \
+  -f docs/docker/ruoyi-ai/docker-compose-all.yaml pull
+docker compose --env-file docs/docker/ruoyi-ai/.env \
+  -f docs/docker/ruoyi-ai/docker-compose-all.yaml up -d
 
 # 查看服务状态
-docker compose -f docs/docker/ruoyi-ai/docker-compose-all.yaml ps
+docker compose --env-file docs/docker/ruoyi-ai/.env \
+  -f docs/docker/ruoyi-ai/docker-compose-all.yaml ps
 
-# 访问服务
-# 管理端: http://localhost:25666 (admin / admin123)
-# 用户端: http://localhost:25137
-# 后端API: http://localhost:26039
+# 访问服务（将 SERVER_IP 替换为服务器地址）
+# 管理端: http://SERVER_IP:25666 (admin / admin123)
+# 用户端: http://SERVER_IP:25137
+# 后端API: http://SERVER_IP:26039
 ```
 
+默认 Compose 还会发布 MySQL（`23306`）、Redis（`26379`）、Weaviate（`28080`）和
+MinIO（`29000`/`29090`）端口。生产环境请修改 MySQL 和 MinIO 默认密码，并通过防火墙或反向代理只开放应用端口。
+
+升级到其他已发布版本时，修改 `docs/docker/ruoyi-ai/.env` 中的 `RUIYI_VERSION`，然后使用相同的
+`--env-file` 和 `-f` 参数执行 `docker compose pull`、`docker compose up -d`。除非确定要删除持久化数据卷，
+不要执行 `docker compose down -v`。
+
 ### 方式二：分步部署（源码编译）
 
 如果您需要从源码构建后端服务，请按照以下步骤操作：