diff --git a/.github/workflows/goreleaser.yml b/.github/workflows/goreleaser.yml
index 7f1ae24..c39f21f 100644
--- a/.github/workflows/goreleaser.yml
+++ b/.github/workflows/goreleaser.yml
@@ -3,7 +3,7 @@ name: Goreleaser
 on:
   push:
     tags:
-      - "*"
+      - "v[0-9]+.[0-9]+.[0-9]+"
 
 permissions:
   contents: write
diff --git a/.github/workflows/trivy-scan.yml b/.github/workflows/trivy-scan.yml
new file mode 100644
index 0000000..0af4890
--- /dev/null
+++ b/.github/workflows/trivy-scan.yml
@@ -0,0 +1,51 @@
+name: Trivy Security Scan
+
+on:
+  schedule:
+    - cron: '0 0 * * *'
+  pull_request:
+    branches:
+      - master
+  push:
+    branches:
+      - master
+  workflow_dispatch:
+
+jobs:
+  trivy-scan:
+    name: Trivy Security Scan
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      security-events: write
+      actions: read
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Run Trivy vulnerability scanner in repo mode
+        uses: aquasecurity/trivy-action@0.33.1
+        with:
+          scan-type: 'fs'
+          scan-ref: '.'
+          scanners: 'vuln,secret,misconfig'
+          format: 'sarif'
+          output: 'trivy-results.sarif'
+          severity: 'CRITICAL,HIGH,MEDIUM'
+
+      - name: Upload Trivy results to GitHub Security tab
+        uses: github/codeql-action/upload-sarif@v3
+        if: always()
+        with:
+          sarif_file: 'trivy-results.sarif'
+
+      - name: Run Trivy vulnerability scanner (table format)
+        uses: aquasecurity/trivy-action@0.33.1
+        with:
+          scan-type: 'fs'
+          scan-ref: '.'
+          scanners: 'vuln,secret,misconfig'
+          format: 'table'
+          severity: 'CRITICAL,HIGH,MEDIUM'
+          exit-code: '1'
diff --git a/CLAUDE.md b/CLAUDE.md
new file mode 100644
index 0000000..d4f115f
--- /dev/null
+++ b/CLAUDE.md
@@ -0,0 +1,178 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+This is a GitHub Action for executing remote SSH commands. Built using a composite action pattern, it downloads and runs the [drone-ssh](https://github.com/appleboy/drone-ssh) binary (written in Go) to execute SSH commands on remote hosts.
+
+**Key characteristics:**
+
+- No local compilation required - downloads pre-built binaries from drone-ssh releases
+- Shell-based composite action using `entrypoint.sh`
+- Supports password and SSH key authentication, proxies, multiple hosts, and environment variable passing
+- All input parameters are passed via `INPUT_*` environment variables
+
+## Architecture
+
+### Execution Flow
+
+1. **action.yml** - GitHub Actions composite action definition
+   - Defines all input parameters and their descriptions
+   - Sets up environment variables with `INPUT_*` prefix
+   - Calls `entrypoint.sh`
+
+2. **entrypoint.sh** - Main entry point
+   - Detects platform (Linux/Darwin/Windows) and architecture (amd64/arm64)
+   - Downloads appropriate `drone-ssh` binary from GitHub releases
+   - Executes the binary with all environment variables
+   - Handles `capture_stdout` for output capture
+
+3. **drone-ssh binary** - The actual SSH client (separate Go project)
+   - Performs SSH connection and command execution
+   - Not part of this repository
+
+### Key Files
+
+- `action.yml` - Action metadata and input/output definitions
+- `entrypoint.sh` - Platform detection, binary download, and execution
+- `testdata/` - Test scripts and SSH keys for CI workflows
+- `.github/workflows/main.yml` - Comprehensive test suite using Docker containers (tests `./` local action)
+- `.github/workflows/stable.yml` - Tests against published `appleboy/ssh-action@v1` tag
+- `.github/workflows/trivy-scan.yml` - Automated security scanning for vulnerabilities and misconfigurations
+
+## Testing
+
+### Running Tests
+
+Tests run automatically via GitHub Actions workflows. The test suite uses Docker containers running OpenSSH servers:
+
+```bash
+# Tests run automatically on push via .github/workflows/main.yml
+# Tests create Docker containers with openssh-server and test various scenarios
+```
+
+### Test Categories (from main.yml)
+
+The test workflow covers:
+
+- **default-user-name-password**: Basic password authentication
+- **check-ssh-key**: RSA key authentication, key priority over password
+- **support-key-passphrase**: Encrypted SSH keys
+- **multiple-server**: Multiple hosts with different ports
+- **support-ed25519-key**: ED25519 key format
+- **testing-with-env**: Environment variable passing, `allenvs`, custom formats
+- **testing06**: IPv6 connectivity
+- **testing07**: Special characters in passwords
+- **testing-capturing-output**: Output capture functionality
+- **testing-script-stop**: Script error handling with `set -e`
+- **testing-script-error**: Error propagation
+
+### Testing Locally
+
+Since this action downloads binaries, local testing should:
+
+1. Create a test SSH server (Docker or VM)
+2. Test `entrypoint.sh` directly with appropriate `INPUT_*` environment variables
+
+Example:
+
+```bash
+export INPUT_HOST="192.168.1.100"
+export INPUT_USERNAME="testuser"
+export INPUT_PASSWORD="testpass"
+export INPUT_PORT="22"
+export INPUT_SCRIPT="whoami"
+export GITHUB_ACTION_PATH="$(pwd)"
+./entrypoint.sh
+```
+
+## Important Patterns
+
+### Script Execution
+
+Users can provide scripts in two ways:
+
+- `script`: Inline commands (via `INPUT_SCRIPT`)
+- `script_path`: Path to a file in the repository (maps to `INPUT_SCRIPT_FILE` env var - note the naming difference)
+
+### Error Handling
+
+To stop execution on first error (mimics removed `script_stop` option), users should add `set -e` to their scripts:
+
+```yaml
+script: |
+  #!/usr/bin/env bash
+  set -e
+  command1
+  command2
+```
+
+### Environment Variables
+
+The action passes GitHub Action inputs as environment variables with `INPUT_*` prefix. The drone-ssh binary reads these to configure SSH behavior.
+
+Special handling:
+
+- `envs`: Comma-separated list of environment variables to pass to remote script
+- `allenvs`: Pass all `GITHUB_*` and `INPUT_*` variables
+- `envs_format`: Custom format for environment variable export (e.g., `export TEST_{NAME}={VALUE}`)
+
+### Multiple Hosts
+
+- Comma-separated hosts: `"host1,host2"` (executes in parallel by default)
+- With custom ports: `"host1:2222,host2:5678"`
+- Synchronous execution: Set `sync: true`
+
+## Common Issues
+
+### Command Not Found
+
+Non-interactive shells may skip `.bashrc`/`.bash_profile`. See README section "Command not found" for details. Solutions:
+
+- Use absolute paths in commands
+- Comment out early return in `/etc/bash.bashrc`
+
+### OpenSSH Compatibility
+
+Ubuntu 20.04+ may require enabling `ssh-rsa` algorithm in sshd_config:
+
+```txt
+CASignatureAlgorithms +ssh-rsa
+```
+
+Or use ED25519 keys instead (preferred).
+
+## Development Guidelines
+
+### Adding New Parameters
+
+1. Add input definition to `action.yml` with description
+2. Add corresponding `INPUT_*` environment variable mapping in `action.yml` runs.steps
+3. Update README.md parameter tables
+4. The drone-ssh binary handles the actual parameter logic (separate repo)
+
+### Documentation
+
+- Keep parameter tables in README.md synchronized with `action.yml`
+- Maintain Chinese translations (README.zh-cn.md, README.zh-tw.md)
+- Use clear examples for each feature
+
+### Version Management
+
+The action pins to specific drone-ssh versions via:
+
+- Default: `DRONE_SSH_VERSION="1.8.2"` in `entrypoint.sh`
+- Override: Users can specify `version` input parameter
+
+Update the default version when new drone-ssh releases are available.
+
+## Release Process
+
+This action uses semantic versioning with major version tags:
+
+- Tags: `v1.0.0`, `v1.0.1`, etc.
+- Major version tag: `v1` (points to latest v1.x.x)
+- Users reference: `uses: appleboy/ssh-action@v1`
+
+GoReleaser config (`.goreleaser.yaml`) is present but set to `skip: true` since this action doesn't build Go code - it downloads pre-built binaries.
diff --git a/README.md b/README.md
index 0a89eed..dc7da87 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,7 @@ English | [繁體中文](./README.zh-tw.md) | [简体中文](./README.zh-cn.md)
     - [🔌 Connection Settings](#-connection-settings)
     - [🛠️ SSH Command Settings](#️-ssh-command-settings)
     - [🌐 Proxy Settings](#-proxy-settings)
+  - [📤 Output Variables](#-output-variables)
   - [⚡ Quick Start](#-quick-start)
   - [🔑 SSH Key Setup \& OpenSSH Compatibility](#-ssh-key-setup--openssh-compatibility)
     - [Setting Up SSH Keys](#setting-up-ssh-keys)
@@ -26,6 +27,7 @@ English | [繁體中文](./README.zh-tw.md) | [简体中文](./README.zh-cn.md)
     - [Multiple hosts with different ports](#multiple-hosts-with-different-ports)
     - [Synchronous execution on multiple hosts](#synchronous-execution-on-multiple-hosts)
     - [Pass environment variables to shell script](#pass-environment-variables-to-shell-script)
+    - [Capturing command output](#capturing-command-output)
   - [🌐 Proxy \& Jump Host Usage](#-proxy--jump-host-usage)
   - [🛡️ Security Best Practices](#️-security-best-practices)
     - [Protecting Your Private Key](#protecting-your-private-key)
@@ -46,6 +48,7 @@ Built with [Golang](https://go.dev) and [drone-ssh](https://github.com/appleboy/
 ![ssh workflow](./images/ssh-workflow.png)
 
 [![testing main branch](https://github.com/appleboy/ssh-action/actions/workflows/main.yml/badge.svg)](https://github.com/appleboy/ssh-action/actions/workflows/main.yml)
+[![Trivy Security Scan](https://github.com/appleboy/ssh-action/actions/workflows/trivy-scan.yml/badge.svg)](https://github.com/appleboy/ssh-action/actions/workflows/trivy-scan.yml)
 
 ---
 
@@ -84,7 +87,7 @@ These parameters control the commands executed on the remote host and related be
 | Parameter       | Description                                                                       | Default |
 | --------------- | --------------------------------------------------------------------------------- | ------- |
 | script          | Commands to execute remotely                                                      |         |
-| script_path     | Path to a file containing commands to execute                                     |         |
+| script_path     | Path to a file in the repository containing commands to execute remotely          |         |
 | envs            | Environment variables to pass to the shell script                                 |         |
 | envs_format     | Flexible configuration for environment variable transfer                          |         |
 | allenvs         | Pass all environment variables with `GITHUB_` and `INPUT_` prefixes to the script | false   |
@@ -92,6 +95,7 @@ These parameters control the commands executed on the remote host and related be
 | debug           | Enable debug mode                                                                 | false   |
 | request_pty     | Request a pseudo-terminal from the server                                         | false   |
 | curl_insecure   | Allow curl to connect to SSL sites without certificates                           | false   |
+| capture_stdout  | Capture standard output from commands as action output                            | false   |
 | version         | drone-ssh binary version. If not specified, the latest version will be used.      |         |
 
 ---
@@ -119,6 +123,16 @@ These parameters control the use of a proxy (jump host) for connecting to your t
 
 ---
 
+## 📤 Output Variables
+
+This action provides the following outputs that you can use in subsequent steps:
+
+| Output | Description                                                       |
+| ------ | ----------------------------------------------------------------- |
+| stdout | Standard output of the executed commands (requires `capture_stdout: true`) |
+
+---
+
 ## ⚡ Quick Start
 
 Run remote SSH commands in your workflow with minimal configuration:
@@ -135,7 +149,7 @@ jobs:
         uses: appleboy/ssh-action@v1
         with:
           host: ${{ secrets.HOST }}
-          username: linuxserver.io
+          username: ${{ secrets.USERNAME }}
           password: ${{ secrets.PASSWORD }}
           port: ${{ secrets.PORT }}
           script: whoami
@@ -147,7 +161,7 @@ jobs:
 ======CMD======
 whoami
 ======END======
-linuxserver.io
+out: your_username
 ===============================================
 ✅ Successfully executed commands to all hosts.
 ===============================================
@@ -221,7 +235,7 @@ ssh: handshake failed: ssh: unable to authenticate, attempted methods [none publ
 
 On Ubuntu 20.04+ you may need to explicitly allow the `ssh-rsa` algorithm. Add this to your OpenSSH daemon config (`/etc/ssh/sshd_config` or a drop-in under `/etc/ssh/sshd_config.d/`):
 
-```bash
+```text
 CASignatureAlgorithms +ssh-rsa
 ```
 
@@ -365,6 +379,28 @@ Default `port` is `22`.
 
 > _All environment variables in the `env` object must be strings. Using integers or other types may cause unexpected results._
 
+### Capturing command output
+
+You can capture the standard output of remote commands and use it in subsequent steps:
+
+```yaml
+- name: Execute and capture output
+  id: ssh
+  uses: appleboy/ssh-action@v1
+  with:
+    host: ${{ secrets.HOST }}
+    username: ${{ secrets.USERNAME }}
+    key: ${{ secrets.KEY }}
+    port: ${{ secrets.PORT }}
+    capture_stdout: true
+    script: |
+      echo "Hello World"
+      hostname
+
+- name: Use captured output
+  run: echo "SSH output was ${{ steps.ssh.outputs.stdout }}"
+```
+
 ---
 
 ## 🌐 Proxy & Jump Host Usage
@@ -379,7 +415,7 @@ You can connect to remote hosts via a proxy (jump host) for advanced network top
 
 Example `~/.ssh/config`:
 
-```bash
+```text
 Host Jumphost
   HostName Jumphost
   User ubuntu
diff --git a/README.zh-cn.md b/README.zh-cn.md
index 6886c25..fdf99ce 100644
--- a/README.zh-cn.md
+++ b/README.zh-cn.md
@@ -11,6 +11,7 @@
     - [🔌 连接设置](#-连接设置)
     - [🛠️ 指令设置](#️-指令设置)
     - [🌐 代理设置](#-代理设置)
+  - [📤 输出变量](#-输出变量)
   - [⚡ 快速开始](#-快速开始)
   - [🔑 SSH 密钥配置与 OpenSSH 兼容性](#-ssh-密钥配置与-openssh-兼容性)
     - [配置 SSH 密钥](#配置-ssh-密钥)
@@ -26,6 +27,7 @@
     - [多主机不同端口](#多主机不同端口)
     - [多主机同步执行](#多主机同步执行)
     - [传递环境变量到 shell 脚本](#传递环境变量到-shell-脚本)
+    - [捕获命令输出](#捕获命令输出)
   - [🌐 代理与跳板机用法](#-代理与跳板机用法)
   - [🛡️ 安全最佳实践](#️-安全最佳实践)
     - [保护你的私钥](#保护你的私钥)
@@ -46,6 +48,7 @@
 ![ssh workflow](./images/ssh-workflow.png)
 
 [![testing main branch](https://github.com/appleboy/ssh-action/actions/workflows/main.yml/badge.svg)](https://github.com/appleboy/ssh-action/actions/workflows/main.yml)
+[![Trivy Security Scan](https://github.com/appleboy/ssh-action/actions/workflows/trivy-scan.yml/badge.svg)](https://github.com/appleboy/ssh-action/actions/workflows/trivy-scan.yml)
 
 ---
 
@@ -84,7 +87,7 @@
 | 参数            | 描述                                                  | 默认值 |
 | --------------- | ----------------------------------------------------- | ------ |
 | script          | 远程执行的命令                                        |        |
-| script_path     | 包含要执行命令的文件路径                              |        |
+| script_path     | 仓库中包含要远程执行命令的文件路径                    |        |
 | envs            | 传递给 shell 脚本的环境变量                           |        |
 | envs_format     | 环境变量传递的灵活配置                                |        |
 | allenvs         | 传递所有带 `GITHUB_` 和 `INPUT_` 前缀的环境变量到脚本 | false  |
@@ -92,6 +95,7 @@
 | debug           | 启用调试模式                                          | false  |
 | request_pty     | 向服务器请求伪终端                                    | false  |
 | curl_insecure   | 允许 curl 连接无证书的 SSL 站点                       | false  |
+| capture_stdout  | 捕获命令的标准输出作为 Action 输出                    | false  |
 | version         | drone-ssh 二进制版本，未指定时使用最新版本            |        |
 
 ---
@@ -119,6 +123,16 @@
 
 ---
 
+## 📤 输出变量
+
+本 Action 提供以下输出，可在后续步骤中使用：
+
+| 输出   | 描述                                                  |
+| ------ | ----------------------------------------------------- |
+| stdout | 执行命令的标准输出（需设置 `capture_stdout: true`） |
+
+---
+
 ## ⚡ 快速开始
 
 只需简单配置，即可在工作流中执行远程 SSH 命令：
@@ -135,7 +149,7 @@ jobs:
         uses: appleboy/ssh-action@v1
         with:
           host: ${{ secrets.HOST }}
-          username: linuxserver.io
+          username: ${{ secrets.USERNAME }}
           password: ${{ secrets.PASSWORD }}
           port: ${{ secrets.PORT }}
           script: whoami
@@ -147,7 +161,7 @@ jobs:
 ======CMD======
 whoami
 ======END======
-linuxserver.io
+out: your_username
 ===============================================
 ✅ Successfully executed commands to all hosts.
 ===============================================
@@ -221,7 +235,7 @@ ssh: handshake failed: ssh: unable to authenticate, attempted methods [none publ
 
 在 Ubuntu 20.04+，你可能需要显式允许 `ssh-rsa` 算法。请在 OpenSSH 配置文件（`/etc/ssh/sshd_config` 或 `/etc/ssh/sshd_config.d/` 下的 drop-in 文件）中添加：
 
-```bash
+```text
 CASignatureAlgorithms +ssh-rsa
 ```
 
@@ -365,6 +379,28 @@ ssh-keygen -t ed25519 -a 200 -C "your_email@example.com"
 
 > _`env` 对象中的所有环境变量必须为字符串。传递整数或其他类型可能导致意外结果。_
 
+### 捕获命令输出
+
+你可以捕获远程命令的标准输出，并在后续步骤中使用：
+
+```yaml
+- name: 执行并捕获输出
+  id: ssh
+  uses: appleboy/ssh-action@v1
+  with:
+    host: ${{ secrets.HOST }}
+    username: ${{ secrets.USERNAME }}
+    key: ${{ secrets.KEY }}
+    port: ${{ secrets.PORT }}
+    capture_stdout: true
+    script: |
+      echo "Hello World"
+      hostname
+
+- name: 使用捕获的输出
+  run: echo "SSH 输出为 ${{ steps.ssh.outputs.stdout }}"
+```
+
 ---
 
 ## 🌐 代理与跳板机用法
@@ -379,7 +415,7 @@ ssh-keygen -t ed25519 -a 200 -C "your_email@example.com"
 
 示例 `~/.ssh/config`：
 
-```bash
+```text
 Host Jumphost
   HostName Jumphost
   User ubuntu
diff --git a/README.zh-tw.md b/README.zh-tw.md
index 4634ff5..a79c1fd 100644
--- a/README.zh-tw.md
+++ b/README.zh-tw.md
@@ -11,6 +11,7 @@
     - [🔌 連線設定](#-連線設定)
     - [🛠️ 指令設定](#️-指令設定)
     - [🌐 代理設定](#-代理設定)
+  - [📤 輸出變數](#-輸出變數)
   - [⚡ 快速開始](#-快速開始)
   - [🔑 SSH 金鑰設定與 OpenSSH 相容性](#-ssh-金鑰設定與-openssh-相容性)
     - [設定 SSH 金鑰](#設定-ssh-金鑰)
@@ -26,6 +27,7 @@
     - [多主機不同埠號](#多主機不同埠號)
     - [多主機同步執行](#多主機同步執行)
     - [傳遞環境變數到 shell 腳本](#傳遞環境變數到-shell-腳本)
+    - [擷取指令輸出](#擷取指令輸出)
   - [🌐 代理與跳板機用法](#-代理與跳板機用法)
   - [🛡️ 安全最佳實踐](#️-安全最佳實踐)
     - [保護你的私鑰](#保護你的私鑰)
@@ -46,6 +48,7 @@
 ![ssh workflow](./images/ssh-workflow.png)
 
 [![testing main branch](https://github.com/appleboy/ssh-action/actions/workflows/main.yml/badge.svg)](https://github.com/appleboy/ssh-action/actions/workflows/main.yml)
+[![Trivy Security Scan](https://github.com/appleboy/ssh-action/actions/workflows/trivy-scan.yml/badge.svg)](https://github.com/appleboy/ssh-action/actions/workflows/trivy-scan.yml)
 
 ---
 
@@ -84,7 +87,7 @@
 | 參數            | 說明                                                  | 預設值 |
 | --------------- | ----------------------------------------------------- | ------ |
 | script          | 遠端執行的指令                                        |        |
-| script_path     | 包含要執行指令的檔案路徑                              |        |
+| script_path     | 儲存庫中包含要遠端執行指令的檔案路徑                  |        |
 | envs            | 傳遞給 shell 腳本的環境變數                           |        |
 | envs_format     | 環境變數傳遞的彈性設定                                |        |
 | allenvs         | 傳遞所有帶 `GITHUB_` 和 `INPUT_` 前綴的環境變數到腳本 | false  |
@@ -92,6 +95,7 @@
 | debug           | 啟用除錯模式                                          | false  |
 | request_pty     | 向伺服器請求偽終端                                    | false  |
 | curl_insecure   | 允許 curl 連線無憑證的 SSL 網站                       | false  |
+| capture_stdout  | 擷取指令的標準輸出作為 Action 輸出                    | false  |
 | version         | drone-ssh 執行檔版本，未指定時使用最新版本            |        |
 
 ---
@@ -119,6 +123,16 @@
 
 ---
 
+## 📤 輸出變數
+
+本 Action 提供以下輸出，可在後續步驟中使用：
+
+| 輸出   | 說明                                                  |
+| ------ | ----------------------------------------------------- |
+| stdout | 執行指令的標準輸出（需設定 `capture_stdout: true`） |
+
+---
+
 ## ⚡ 快速開始
 
 只需簡單設定，即可在工作流程中執行遠端 SSH 指令：
@@ -135,7 +149,7 @@ jobs:
         uses: appleboy/ssh-action@v1
         with:
           host: ${{ secrets.HOST }}
-          username: linuxserver.io
+          username: ${{ secrets.USERNAME }}
           password: ${{ secrets.PASSWORD }}
           port: ${{ secrets.PORT }}
           script: whoami
@@ -147,7 +161,7 @@ jobs:
 ======CMD======
 whoami
 ======END======
-linuxserver.io
+out: your_username
 ===============================================
 ✅ Successfully executed commands to all hosts.
 ===============================================
@@ -221,7 +235,7 @@ ssh: handshake failed: ssh: unable to authenticate, attempted methods [none publ
 
 在 Ubuntu 20.04+，你可能需明確允許 `ssh-rsa` 演算法。請於 OpenSSH 設定檔（`/etc/ssh/sshd_config` 或 `/etc/ssh/sshd_config.d/` 下的 drop-in 檔案）加入：
 
-```bash
+```text
 CASignatureAlgorithms +ssh-rsa
 ```
 
@@ -365,6 +379,28 @@ ssh-keygen -t ed25519 -a 200 -C "your_email@example.com"
 
 > _`env` 物件中的所有環境變數必須為字串。傳遞整數或其他型別可能導致非預期結果。_
 
+### 擷取指令輸出
+
+你可以擷取遠端指令的標準輸出，並在後續步驟中使用：
+
+```yaml
+- name: 執行並擷取輸出
+  id: ssh
+  uses: appleboy/ssh-action@v1
+  with:
+    host: ${{ secrets.HOST }}
+    username: ${{ secrets.USERNAME }}
+    key: ${{ secrets.KEY }}
+    port: ${{ secrets.PORT }}
+    capture_stdout: true
+    script: |
+      echo "Hello World"
+      hostname
+
+- name: 使用擷取的輸出
+  run: echo "SSH 輸出為 ${{ steps.ssh.outputs.stdout }}"
+```
+
 ---
 
 ## 🌐 代理與跳板機用法
@@ -379,7 +415,7 @@ ssh-keygen -t ed25519 -a 200 -C "your_email@example.com"
 
 範例 `~/.ssh/config`：
 
-```bash
+```text
 Host Jumphost
   HostName Jumphost
   User ubuntu
diff --git a/entrypoint.sh b/entrypoint.sh
index 1eb7733..d5d56b6 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -6,7 +6,14 @@ export GITHUB="true"
 
 GITHUB_ACTION_PATH="${GITHUB_ACTION_PATH%/}"
 DRONE_SSH_RELEASE_URL="${DRONE_SSH_RELEASE_URL:-https://github.com/appleboy/drone-ssh/releases/download}"
-DRONE_SSH_VERSION="${DRONE_SSH_VERSION:-1.8.1}"
+DRONE_SSH_VERSION="${DRONE_SSH_VERSION:-1.8.2}"
+
+# Error codes
+readonly ERR_UNKNOWN_PLATFORM=2
+readonly ERR_UNKNOWN_ARCH=3
+readonly ERR_DOWNLOAD_FAILED=4
+readonly ERR_INVALID_BINARY=5
+readonly ERR_VERSION_CHECK_FAILED=6
 
 function log_error() {
   echo "$1" >&2
@@ -19,13 +26,13 @@ function detect_client_info() {
 
   case "${CLIENT_PLATFORM}" in
   darwin | linux | windows) ;;
-  *) log_error "Unknown or unsupported platform: ${CLIENT_PLATFORM}. Supported platforms are Linux, Darwin, and Windows." 2 ;;
+  *) log_error "Unknown or unsupported platform: ${CLIENT_PLATFORM}. Supported platforms are Linux, Darwin, and Windows." "${ERR_UNKNOWN_PLATFORM}" ;;
   esac
 
   case "${CLIENT_ARCH}" in
   x86_64* | i?86_64* | amd64*) CLIENT_ARCH="amd64" ;;
   aarch64* | arm64*) CLIENT_ARCH="arm64" ;;
-  *) log_error "Unknown or unsupported architecture: ${CLIENT_ARCH}. Supported architectures are x86_64, i686, and arm64." 3 ;;
+  *) log_error "Unknown or unsupported architecture: ${CLIENT_ARCH}. Supported architectures are x86_64, i686, and arm64." "${ERR_UNKNOWN_ARCH}" ;;
   esac
 }
 
@@ -33,17 +40,35 @@ detect_client_info
 DOWNLOAD_URL_PREFIX="${DRONE_SSH_RELEASE_URL}/v${DRONE_SSH_VERSION}"
 CLIENT_BINARY="drone-ssh-${DRONE_SSH_VERSION}-${CLIENT_PLATFORM}-${CLIENT_ARCH}"
 TARGET="${GITHUB_ACTION_PATH}/${CLIENT_BINARY}"
-echo "Downloading ${CLIENT_BINARY} from ${DOWNLOAD_URL_PREFIX}"
-INSECURE_OPTION=""
-if [[ "${INPUT_CURL_INSECURE}" == 'true' ]]; then
-  INSECURE_OPTION="--insecure"
+
+# Check if binary already exists and is executable (caching)
+if [[ -f "${TARGET}" ]] && [[ -x "${TARGET}" ]]; then
+  echo "Binary ${CLIENT_BINARY} already exists, skipping download"
+else
+  echo "Downloading ${CLIENT_BINARY} from ${DOWNLOAD_URL_PREFIX}"
+  INSECURE_OPTION=""
+  if [[ "${INPUT_CURL_INSECURE}" == 'true' ]]; then
+    INSECURE_OPTION="--insecure"
+  fi
+
+  # Download with better error handling
+  if ! curl -fsSL --retry 5 --keepalive-time 2 --location ${INSECURE_OPTION} \
+    "${DOWNLOAD_URL_PREFIX}/${CLIENT_BINARY}" -o "${TARGET}"; then
+    log_error "Failed to download ${CLIENT_BINARY} from ${DOWNLOAD_URL_PREFIX}. Please check the URL and your network connection." "${ERR_DOWNLOAD_FAILED}"
+  fi
+
+  # Validate downloaded file
+  if [[ ! -f "${TARGET}" ]] || [[ ! -s "${TARGET}" ]]; then
+    log_error "Downloaded file is missing or empty: ${TARGET}" "${ERR_INVALID_BINARY}"
+  fi
+
+  chmod +x "${TARGET}"
 fi
 
-curl -fsSL --retry 5 --keepalive-time 2 ${INSECURE_OPTION} "${DOWNLOAD_URL_PREFIX}/${CLIENT_BINARY}" -o "${TARGET}"
-chmod +x "${TARGET}"
-
 echo "======= CLI Version Information ======="
-"${TARGET}" --version
+if ! "${TARGET}" --version; then
+  log_error "Failed to execute ${TARGET} --version. The binary may be corrupted." "${ERR_VERSION_CHECK_FAILED}"
+fi
 echo "======================================="
 if [[ "${INPUT_CAPTURE_STDOUT}" == 'true' ]]; then
   {