Add comprehensive documentation for CLICD features and operations

- Introduced Container Management documentation covering lifecycle operations, resource management, and console access.
- Added Dashboard documentation detailing metrics and related APIs.
- Created Host Report documentation summarizing host environment and resource status.
- Included Image Management documentation for template handling and management actions.
- Documented Networking and Routing features including NAT4 and IPv6 management.
- Added Security Alerts documentation outlining alert scenarios and API usage.
- Created Snapshot Management documentation for snapshot operations and scheduling.
- Documented Sub-user management for granting access to specific containers.
- Added Configuration guide detailing runtime settings and security recommendations.
- Created Installation guide for setting up CLICD with requirements and steps.
- Added Introduction and Quick Start guides for new users.
- Documented Upgrade process with version checking and pre-upgrade checklist.
- Created Deployment guide for service exposure and firewall recommendations.
- Added FAQ section addressing common questions and concerns.
- Documented Troubleshooting steps for common issues encountered.

docs/features/containers.md

@@ -25,6 +25,14 @@ POST /api/v1/containers
 POST /api/v1/batch-create
 ```
 
+Linux 容器和 Linux KVM 虚拟机创建时支持配置 SSH 登录方式：
+
+- `auto_password`：自动生成 root SSH 密码。
+- `password`：使用自定义 `ssh_password`。
+- `key`：写入一行 `ssh_public_key`，仍会保留可用于 WebSSH 的密码。
+
+网络分配可以按需组合 NAT、公网 IPv4 和 IPv6。API 字段保持为 `assign_nat`、`assign_ipv4`、`public_ipv4s`、`assign_ipv6`、`ipv6_addresses` 等可选字段，未传时沿用默认行为。
+
 ## 生命周期操作
 
 ```http
@@ -37,6 +45,8 @@ DELETE /api/v1/containers/{id}/delete
 
 开关机、重装、删除等操作会进入任务队列。调用后可通过 `GET /api/v1/tasks` 查看执行状态。
 
+重装 Linux 系统时可传 `ssh_auth_mode`、`ssh_password`、`ssh_public_key`。`ssh_auth_mode=keep` 表示沿用当前 SSH 密码；不传这些字段时保持旧行为。
+
 ## 资源与流量
 
 容器详情页支持查看资源用量，调整流量限制、资源限制和到期时间。