Fix rootless Podman tests on hosted runners

Override the static Podman bundle's single-owner storage option with a minimal rootless user configuration before Feature builds.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: chrmarti

src/test/cli.podman.test.ts

@@ -5,6 +5,7 @@
 
 import * as assert from 'assert';
 import * as path from 'path';
+import { mkdir, writeFile } from 'fs/promises';
 import { shellExec } from './testUtils';
 
 const pkg = require('../../package.json');
@@ -18,6 +19,22 @@ describe('Dev Containers CLI using Podman', function () {
 	before('Install', async () => {
 		await shellExec(`rm -rf ${tmp}/node_modules`);
 		await shellExec(`mkdir -p ${tmp}`);
+		if (process.env.GITHUB_ACTIONS === 'true') {
+			// The hosted runner's static Podman bundle enables single-owner
+			// storage, which prevents APT's _apt user from writing during builds.
+			await shellExec('podman system reset --force');
+			const storageConfig = path.join(process.env.HOME!, '.config', 'containers', 'storage.conf');
+			await mkdir(path.dirname(storageConfig), { recursive: true });
+			await writeFile(storageConfig, [
+				'[storage]',
+				'driver = "overlay"',
+				'[storage.options.overlay]',
+				'ignore_chown_errors = "false"',
+				'',
+			].join('\n'));
+			const { stdout } = await shellExec('podman info --format \'{{json .Store.GraphOptions}}\'');
+			assert.strictEqual(JSON.parse(stdout)['overlay.ignore_chown_errors'], 'false');
+		}
 		await shellExec(`npm --prefix ${tmp} install devcontainers-cli-${pkg.version}.tgz`);
 	});