use node24 (#243)

Node v20 is going to be EOL in April 2026 --
https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

Resolves #242

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## v0.9.1 [2024-03-17]
+
 ### Fixed
 
 * Fix path used to execute ssh-agent in cleanup.js to respect custom paths set by input (#235)

action.yml

@@ -20,7 +20,7 @@ inputs:
         description: 'git command'
         required: false
 runs:
-    using: 'node20'
+    using: 'node24'
     main: 'dist/index.js'
     post: 'dist/cleanup.js'
     post-if: 'always()'

paths.js

@@ -2,8 +2,9 @@ const os = require('os');
 const core = require('@actions/core');
 
 const defaults = (process.env['OS'] != 'Windows_NT') ? {
-    // Use getent() system call, since this is what ssh does; makes a difference in Docker-based
-    // Action runs, where $HOME is different from the pwent
+    // We use os.userInfo() rather than os.homedir(), since it uses the getpwuid() system call to get the user's home directory (see https://nodejs.org/api/os.html#osuserinfooptions).
+    // This mimics the way openssh derives the home directory for locating config files (see https://github.com/openssh/openssh-portable/blob/826483d51a9fee60703298bbf839d9ce37943474/ssh.c#L710);
+    // Makes a difference in Docker-based Action runs, when $HOME is different from what getpwuid() returns (which is based on the entry in /etc/passwd)
     homePath: os.userInfo().homedir,
     sshAgentCmdDefault: 'ssh-agent',
     sshAddCmdDefault: 'ssh-add',