docs: add passphrase example

* support passphrase

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

.github/workflows/ci.yml

@@ -43,7 +43,9 @@ jobs:
     #     key: ${{ secrets.KEY }}
     #     port: ${{ secrets.PORT }}
     #     script_stop: true
-    #     script: "mkdir abc/def,ls -al"
+    #     script: |
+    #       mkdir abc/def
+    #       ls -al
 
     - name: pass environment
       uses: appleboy/ssh-action@master
@@ -56,5 +58,32 @@ jobs:
         port: ${{ secrets.PORT }}
         envs: FOO
         script: |
-          echo "I am $FOO"
-          echo "I am $BAR"
+          echo "I am $FOO, thanks"
+          echo "I am $BAR, thanks"
+
+    - name: pass multiple environment
+      uses: appleboy/ssh-action@master
+      env:
+        FOO: "BAR"
+        BAR: "FOO"
+      with:
+        host: ${{ secrets.HOST }}
+        username: ${{ secrets.USERNAME }}
+        key: ${{ secrets.KEY }}
+        port: ${{ secrets.PORT }}
+        envs: FOO,BAR
+        script: |
+          echo "I am $FOO, thanks"
+          echo "I am $BAR, thanks"
+
+    - name: ssh key passphrase
+      uses: appleboy/ssh-action@master
+      with:
+        host: ${{ secrets.HOST }}
+        username: ${{ secrets.USERNAME }}
+        key: ${{ secrets.SSH2 }}
+        port: ${{ secrets.PORT }}
+        passphrase: ${{ secrets.PASSPHRASE }}
+        script: |
+          whoami
+          ls -al

Dockerfile

@@ -1,4 +1,4 @@
-FROM appleboy/drone-ssh:1.5.2-linux-amd64
+FROM appleboy/drone-ssh:1.5.5-linux-amd64
 
 ADD entrypoint.sh /entrypoint.sh
 RUN chmod +x /entrypoint.sh

README.md

@@ -1,6 +1,6 @@
 # 🚀 SSH for GitHub Actions
 
-[GitHub Action](https://developer.github.com/actions/) for executing remote ssh commands.
+[GitHub Action](https://github.com/features/actions) for executing remote ssh commands.
 
 ![ssh workflow](./images/ssh-workflow.png)
 
@@ -11,7 +11,15 @@
 Executing remote ssh commands.
 
 ```yaml
-- name: executing remote ssh commands using password
+name: remote ssh command
+on: [push]
+jobs:
+
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+    - name: executing remote ssh commands using password
       uses: appleboy/ssh-action@master
       with:
         host: ${{ secrets.HOST }}
@@ -28,21 +36,22 @@ output:
 whoami
 ======END======
 out: ***
-==========================================
-Successfully executed commands to all host.
-==========================================
+==============================================
+✅ Successfully executed commands to all host.
+==============================================
 ```
 
 ## Input variables
 
-see the [action.yml](./action.yml) file for more detail imformation.
+See [action.yml](./action.yml) for more detailed information.
 
-* host - scp remote host
-* port - scp remote port
-* username - scp username
-* password - scp password
+* host - remote host
+* port - remote port, default is `22`
+* username - ssh username
+* password - ssh password
+* passphrase - the passphrase is usually to encrypt the private key
 * timeout - timeout for ssh to remote host, default is `30s`
-* command_timeout - timeout for scp command, default is `1m`
+* command_timeout - timeout for ssh command, default is `10m`
 * key - content of ssh private key. ex raw content of ~/.ssh/id_rsa
 * key_path - path of ssh private key
 * script - execute commands
@@ -50,6 +59,17 @@ see the [action.yml](./action.yml) file for more detail imformation.
 * envs - pass environment variable to shell script
 * debug - enable debug mode
 
+SSH Proxy Setting:
+
+* proxy_host - proxy host
+* proxy_port - proxy port, default is `22`
+* proxy_username - proxy username
+* proxy_password - proxy password
+* proxy_passphrase - the passphrase is usually to encrypt the private key
+* proxy_timeout - timeout for ssh to proxy host, default is `30s`
+* proxy_key - content of ssh proxy private key.
+* proxy_key_path - path of ssh proxy private key
+
 ### Example
 
 Executing remote ssh commands using password.
@@ -98,6 +118,7 @@ Multiple Commands
 Multiple Hosts
 
 ```diff
+  - name: multiple host
     uses: appleboy/ssh-action@master
     with:
 -     host: "foo.com"
@@ -113,15 +134,17 @@ Multiple Hosts
 Pass environment variable to shell script
 
 ```diff
+  - name: pass environment
     uses: appleboy/ssh-action@master
 +   env:
 +     FOO: "BAR"
++     BAR: "FOO"
     with:
       host: ${{ secrets.HOST }}
       username: ${{ secrets.USERNAME }}
       key: ${{ secrets.KEY }}
       port: ${{ secrets.PORT }}
-+   envs: FOO
++     envs: FOO,BAR
       script: |
         echo "I am $FOO"
         echo "I am $BAR"
@@ -129,14 +152,88 @@ Pass environment variable to shell script
 
 Stop script after first failure. ex: missing `abc` folder
 
-```yaml
-- name: stop script if command error
+```diff
+  - name: stop script if command error
     uses: appleboy/ssh-action@master
     with:
       host: ${{ secrets.HOST }}
       username: ${{ secrets.USERNAME }}
       key: ${{ secrets.KEY }}
       port: ${{ secrets.PORT }}
-    script_stop: true
-    script: "mkdir abc/def,ls -al"
++     script_stop: true
+      script: |
+        mkdir abc/def
+        ls -al
+```
+
+output:
+
+```sh
+======CMD======
+mkdir abc/def
+ls -al
+
+======END======
+2019/11/21 01:16:21 Process exited with status 1
+err: mkdir: cannot create directory ‘abc/def’: No such file or directory
+##[error]Docker run failed with exit code 1
+```
+
+How to connect remote server using `ProxyCommand`?
+
+```bash
++--------+       +----------+      +-----------+
+| Laptop | <-->  | Jumphost | <--> | FooServer |
++--------+       +----------+      +-----------+
+```
+
+in your `~/.ssh/config`, you will see the following.
+
+```bash
+Host Jumphost
+  HostName Jumphost
+  User ubuntu
+  Port 22
+  IdentityFile ~/.ssh/keys/jump_host.pem
+
+Host FooServer
+  HostName FooServer
+  User ubuntu
+  Port 22
+  ProxyCommand ssh -q -W %h:%p Jumphost
+```
+
+How to convert to YAML format of GitHubActions.
+
+```diff
+  - name: ssh proxy command
+    uses: appleboy/ssh-action@master
+    with:
+      host: ${{ secrets.HOST }}
+      username: ${{ secrets.USERNAME }}
+      key: ${{ secrets.KEY }}
+      port: ${{ secrets.PORT }}
++     proxy_host: ${{ secrets.PROXY_HOST }}
++     proxy_username: ${{ secrets.PROXY_USERNAME }}
++     proxy_key: ${{ secrets.PROXY_KEY }}
++     proxy_port: ${{ secrets.PROXY_PORT }}
+      script: |
+        mkdir abc/def
+        ls -al
+```
+
+Protecting a Private Key. The purpose of the passphrase is usually to encrypt the private key. This makes the key file by itself useless to an attacker. It is not uncommon for files to leak from backups or decommissioned hardware, and hackers commonly exfiltrate files from compromised systems.
+
+```diff
+  - name: ssh key passphrase
+    uses: appleboy/ssh-action@master
+    with:
+      host: ${{ secrets.HOST }}
+      username: ${{ secrets.USERNAME }}
+      key: ${{ secrets.KEY }}
+      port: ${{ secrets.PORT }}
++     passphrase: ${{ secrets.PASSPHRASE }}
+      script: |
+        whoami
+        ls -al
 ```

action.yml

@@ -6,6 +6,9 @@ inputs:
     description: 'ssh remote host'
   port:
     description: 'ssh remote port'
+    default: 22
+  passphrase:
+    description: 'ssh key passphrase'
   username:
     description: 'ssh username'
   password:
@@ -15,11 +18,29 @@ inputs:
     default: "30s"
   command_timeout:
     description: 'timeout for ssh command'
-    default: "1m"
+    default: "10m"
   key:
     description: 'content of ssh private key. ex raw content of ~/.ssh/id_rsa'
   key_path:
     description: 'path of ssh private key'
+  proxy_host:
+    description: 'ssh proxy remote host'
+  proxy_port:
+    description: 'ssh proxy remote port'
+    default: 22
+  proxy_username:
+    description: 'ssh proxy username'
+  proxy_password:
+    description: 'ssh proxy password'
+  proxy_passphrase:
+    description: 'ssh proxy key passphrase'
+  proxy_timeout:
+    description: 'timeout for ssh to proxy host'
+    default: "30s"
+  proxy_key:
+    description: 'content of ssh proxy private key. ex raw content of ~/.ssh/id_rsa'
+  proxy_key_path:
+    description: 'path of ssh proxy private key'
   script:
     description: 'execute commands'
   script_stop: