### Use withCredentials for SSH Key Binding

Source: https://plugins.jenkins.io/ssh-agent

Utilize the generic `withCredentials` step to bind an SSH private key to a temporary file. This is useful for passing the key to commands like `ssh` or `scp` using the `-i` option.

```groovy
withCredentials([sshUserPrivateKey(credentialsId: 'github', keyFileVariable: 'PK')]) {
    sh 'git -c core.sshCommand="ssh -i $PK" submodule update --init'
}

```

--------------------------------

### Manual ssh-agent with sshUserPrivateKey

Source: https://plugins.jenkins.io/ssh-agent

Manually manage `ssh-agent` within a build using `withCredentials` to add an SSH private key. This approach is useful for customizing `ssh-agent` options.

```groovy
withCredentials([sshUserPrivateKey(credentialsId: 'github', keyFileVariable: 'PK')]) {
    sh '''
        eval `ssh-agent -s`
        trap "ssh-agent -k" EXIT
        ssh-add "$PK"
        # rest of script…
    '''
}

```

--------------------------------

### Use sshagent Step in Pipeline

Source: https://plugins.jenkins.io/ssh-agent

Use the `sshagent` step within a Pipeline job to provide SSH credentials. Ensure the credentials ID is correctly specified.

```groovy
steps {
    sshagent(credentials: ['ssh-credentials-id']) {
      sh '''
          [ -d ~/.ssh ] || mkdir ~/.ssh && chmod 0700 ~/.ssh
          ssh-keyscan -t rsa,dsa example.com >> ~/.ssh/known_hosts
          ssh user@example.com ...
      '''
    }
}

```

--------------------------------

### Declare SSH Agent Plugin Dependency in Maven POM

Source: https://plugins.jenkins.io/ssh-agent/dependencies

Add this dependency to your plugin's POM to use the SSH Agent plugin. It is recommended to use the Jenkins plugin BOM to avoid version conflicts.

```xml
<dependency>
    <groupId>org.jenkins-ci.plugins</groupId>
    <artifactId>ssh-agent</artifactId>
</dependency>
```

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