diff --git a/Dockerfile b/Dockerfile
index 197526a..47f72c5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -41,4 +41,4 @@ USER node
 EXPOSE 3000
 
 # Start the server
-CMD ["node", "backend/dist/server.js"]
+CMD ["node", "backend/dist/server.js"]
\ No newline at end of file
diff --git a/README.md b/README.md
index 23bf78c..038c326 100644
--- a/README.md
+++ b/README.md
@@ -91,8 +91,18 @@
 
 如果你想把数据完全掌控在自己手里，或者需要在内网环境运行。
 
+**⚠️ 核心安全须知**：为了提供最高级别的安全保障，本项目的 Docker 镜像严格遵循**非特权用户（Rootless）**运行标准（内部以 `node` 用户，UID 1000 运行），从而有效防止潜在的容器逃逸风险。
+在运行容器前，你**必须**预先在宿主机创建目录并分配正确的权限，否则会出现 `Permission Denied` 报错。
+
+#### 0. 准备数据目录 (必做)
+在你想运行容器的目录下，执行以下命令：
+```bash
+mkdir -p data && sudo chown -R 1000:1000 data
+```
+
 #### 1. 使用 Docker Compose (推荐)
-在你的服务器上创建 `docker-compose.yml`：
+
+1. 在服务器上创建 `docker-compose.yml`：
 ```yaml
 services:
   2fauth:
@@ -103,6 +113,7 @@ services:
     volumes:
       - ./data:/app/data
     environment:
+      # 核心密钥
       - ENCRYPTION_KEY=32位以上随机密钥
       - JWT_SECRET=32位以上随机JWT密钥
       - OAUTH_ALLOWED_USERS=你的邮箱@example.com
@@ -112,7 +123,7 @@ services:
       - OAUTH_GITHUB_REDIRECT_URI=https://你的域名/oauth/callback
     restart: unless-stopped
 ```
-运行 `docker compose up -d` 即可。
+2. 运行 `docker compose up -d` 即可。
 
 #### 2. 使用 Docker Run
 ```bash
@@ -124,8 +135,8 @@ docker run -d --name 2fauth-worker \
   -e OAUTH_ALLOWED_USERS=你的邮箱 \
   -e OAUTH_GITHUB_CLIENT_ID= \
   -e OAUTH_GITHUB_CLIENT_SECRET= \
-  -e OAUTH_GITHUB_CLIENT_REDIRECT_URI= \
-  nap0o/2fauth-worker:latest 
+  -e OAUTH_GITHUB_REDIRECT_URI=https://你的域名/oauth/callback \
+  nap0o/2fauth-worker:latest
 ```
 
 ---
diff --git a/README_EN.md b/README_EN.md
index 6930f35..3facc11 100644
--- a/README_EN.md
+++ b/README_EN.md
@@ -93,8 +93,17 @@ The most hassle-free way. No server required; Cloudflare hosts it for you for fr
 
 If you want absolute control over your data or need to run it in a local network.
 
+**⚠️ Important Security Notice**: To provide the highest level of security, this image runs strictly as a **non-privileged user (node, UID 1000)** to prevent container escape risks. 
+You **MUST** create the data directory and set the correct permissions on your host machine before starting the container, otherwise you will encounter `Permission Denied` errors.
+
+#### 0. Prepare Data Directory (Required)
+```bash
+mkdir -p data && sudo chown -R 1000:1000 data
+```
+
 #### 1. Using Docker Compose (Recommended)
-Create `docker-compose.yml` on your server:
+
+1. Create `docker-compose.yml` on your server:
 ```yaml
 services:
   2fauth:
@@ -105,16 +114,17 @@ services:
     volumes:
       - ./data:/app/data
     environment:
+      # Core Secrets
       - ENCRYPTION_KEY=Your_32_Character_Random_Key
-      - JWT_SECRET=Your_Random_JWT_Secret
+      - JWT_SECRET=Your_32_Character_Random_JWT_Secret
       - OAUTH_ALLOWED_USERS=your_email@example.com
       # Configure at least one provider (GitHub example)
       - OAUTH_GITHUB_CLIENT_ID=your_id
       - OAUTH_GITHUB_CLIENT_SECRET=your_secret
-      - OAUTH_GITHUB_REDIRECT_URI=https://your-domain.com/oauth/callback
+      - OAUTH_GITHUB_REDIRECT_URI=[https://your-domain.com/oauth/callback](https://your-domain.com/oauth/callback)
     restart: unless-stopped
 ```
-Run `docker compose up -d`.
+2. Run `docker compose up -d`.
 
 #### 2. Using Docker Run
 ```bash
@@ -126,8 +136,8 @@ docker run -d --name 2fauth-worker \
   -e OAUTH_ALLOWED_USERS=your_email@example.com \
   -e OAUTH_GITHUB_CLIENT_ID= \
   -e OAUTH_GITHUB_CLIENT_SECRET= \
-  -e OAUTH_GITHUB_CLIENT_REDIRECT_URI= \
-  nap0o/2fauth-worker:latest 
+  -e OAUTH_GITHUB_REDIRECT_URI=[https://your-domain.com/oauth/callback](https://your-domain.com/oauth/callback) \
+  nap0o/2fauth-worker:latest
 ```
 
 ---
diff --git a/backend/package.json b/backend/package.json
index 5100edc..1e5251b 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -14,7 +14,7 @@
     "drizzle-orm": "^0.30.10",
     "hono": "^4.12.3",
     "node-cron": "^4.2.1",
-    "nodemailer": "^6.10.1",
+    "nodemailer": "^7.0.11",
     "webdav": "^5.9.0"
   },
   "devDependencies": {
@@ -22,7 +22,7 @@
     "@types/better-sqlite3": "^7.6.13",
     "@types/node": "^25.3.5",
     "@types/node-cron": "^3.0.11",
-    "@types/nodemailer": "^6.4.17",
+    "@types/nodemailer": "^7.0.11",
     "drizzle-kit": "^0.31.9",
     "typescript": "^5.9.3",
     "wrangler": "^4.71.0"
diff --git a/backend/src/app/server.ts b/backend/src/app/server.ts
index 505826a..823b117 100644
--- a/backend/src/app/server.ts
+++ b/backend/src/app/server.ts
@@ -18,14 +18,46 @@ const dataDir = path.resolve(baseDir, 'data');
 console.log(`[Docker Server] Base directory: ${baseDir}`);
 console.log(`[Docker Server] Frontend dist path: ${frontendDistPath}`);
 
-// 2. Ensure data directory exists
+// 2. Ensure data directory exists and is writable
 if (!fs.existsSync(dataDir)) {
     fs.mkdirSync(dataDir, { recursive: true });
 }
 
+try {
+    fs.accessSync(dataDir, fs.constants.W_OK);
+} catch (err) {
+    console.error(`\n❌ ERROR: Data directory "${dataDir}" is NOT writable!`);
+    console.error(`   Please run on your host: sudo chown -R 1000:1000 ./data\n`);
+    process.exit(1);
+}
+
 // 3. Initialize local SQLite Database
 const dbFile = process.env.SQLITE_DB_PATH || path.join(dataDir, '2fauth.db');
-const sqlite = new Database(dbFile);
+
+// Check if database file is writable if it exists
+if (fs.existsSync(dbFile)) {
+    try {
+        fs.accessSync(dbFile, fs.constants.W_OK);
+    } catch (err) {
+        console.error(`\n❌ ERROR: Database file "${dbFile}" is NOT writable!`);
+        console.error(`   Please run on your host: sudo chown 1000:1000 ${dbFile}\n`);
+        process.exit(1);
+    }
+}
+
+let sqlite: Database.Database;
+try {
+    sqlite = new Database(dbFile);
+} catch (err: any) {
+    if (err.code === 'SQLITE_CANTOPEN') {
+        console.error(`\n❌ ERROR: SQLite cannot open database file "${dbFile}".`);
+        console.error(`   This is likely a permission issue on the mounted volume.`);
+        console.error(`   Please run on your host: sudo chown -R 1000:1000 ./data\n`);
+    } else {
+        console.error(`\n❌ ERROR: Failed to open database:`, err.message);
+    }
+    process.exit(1);
+}
 sqlite.pragma('journal_mode = WAL');
 
 // 4. Initialize Drizzle ORM
diff --git a/backend/src/features/auth/authRoutes.ts b/backend/src/features/auth/authRoutes.ts
index d00e57f..6c9c21a 100644
--- a/backend/src/features/auth/authRoutes.ts
+++ b/backend/src/features/auth/authRoutes.ts
@@ -9,7 +9,7 @@ import { WebAuthnService } from '@/features/auth/webAuthnService';
 const auth = new Hono<{ Bindings: EnvBindings, Variables: { user: any } }>();
 
 const getService = (c: any) => new AuthService(c.env);
-const getWebAuthnService = (c: any) => new WebAuthnService(c.env, c.req.url);
+const getWebAuthnService = (c: any) => new WebAuthnService(c.env, c.req.url, c.req.header());
 
 // 获取可用登录方式列表
 auth.get('/providers', (c) => {
diff --git a/backend/src/features/auth/webAuthnService.ts b/backend/src/features/auth/webAuthnService.ts
index eda60be..13dd343 100644
--- a/backend/src/features/auth/webAuthnService.ts
+++ b/backend/src/features/auth/webAuthnService.ts
@@ -15,11 +15,17 @@ export class WebAuthnService {
     private rpID: string;
     private origin: string;
 
-    constructor(env: EnvBindings, url: string) {
+    constructor(env: EnvBindings, url: string, headers?: Record<string, string | undefined>) {
         this.env = env;
         const parsedUrl = new URL(url);
-        this.rpID = parsedUrl.hostname;
-        this.origin = `${parsedUrl.protocol}//${parsedUrl.host}`;
+
+        // Handle Reverse Proxy (Docker/Nginx/Cloudflare)
+        // If X-Forwarded-Proto exists, use it as the real protocol
+        const proto = headers?.['x-forwarded-proto'] || parsedUrl.protocol.replace(':', '');
+        const host = headers?.['x-forwarded-host'] || parsedUrl.host;
+
+        this.rpID = host.split(':')[0]; // Domain only for RP ID
+        this.origin = `${proto.includes('://') ? proto : proto + '://'}${host}`;
     }
 
     /**
diff --git a/docker-compose.yml b/docker-compose.yml
index b2a5d40..c6c46b8 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -25,12 +25,12 @@ services:
       # Google 登录配置
       # - OAUTH_GOOGLE_CLIENT_ID=
       # - OAUTH_GOOGLE_CLIENT_SECRET=
-      # - OAUTH_GOOGLE_REDIRECT_URI=https://<your_domain>/api/oauth/callback
+      # - OAUTH_GOOGLE_REDIRECT_URI=https://<your_domain>/oauth/callback
 
       # Github 登录配置
       # - OAUTH_GITHUB_CLIENT_ID=
       # - OAUTH_GITHUB_CLIENT_SECRET=
-      # - OAUTH_GITHUB_REDIRECT_URI=https://<your_domain>/api/oauth/callback
+      # - OAUTH_GITHUB_REDIRECT_URI=https://<your_domain>/oauth/callback
 
       # Telegram 登录配置
       # - OAUTH_TELEGRAM_BOT_NAME=your_bot_name
@@ -50,4 +50,4 @@ services:
       # Nodeloc 登录配置
       # - OAUTH_NODELOC_CLIENT_ID=
       # - OAUTH_NODELOC_CLIENT_SECRET=
-      # - OAUTH_NODELOC_REDIRECT_URI=https://<your_domain>/api/oauth/callback
+      # - OAUTH_NODELOC_REDIRECT_URI=https://<your_domain>/oauth/callback
\ No newline at end of file