Use lightweight Feature in Podman tests

Keep Podman coverage focused on CLI Feature support without depending on Docker-in-Docker package installation under hosted-runner storage constraints.

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

Author: chrmarti

src/test/cli.podman.test.ts

@@ -14,6 +14,11 @@ describe('Dev Containers CLI using Podman', function () {
 
 	const tmp = path.relative(process.cwd(), path.join(__dirname, 'tmp'));
 	const cli = `npx --prefix ${tmp} devcontainer`;
+	const additionalFeatures = JSON.stringify({
+		'ghcr.io/devcontainers/feature-starter/hello:1': {
+			greeting: 'howdy',
+		},
+	});
 
 	before('Install', async () => {
 		await shellExec(`rm -rf ${tmp}/node_modules`);
@@ -23,17 +28,17 @@ describe('Dev Containers CLI using Podman', function () {
 
 	describe('Command up using Podman', () => {
 
-		it('should execute successfully with valid config with features', async () => {
-			const res = await shellExec(`${cli} up --docker-path podman --workspace-folder ${__dirname}/configs/image-with-features`);
+		it('should execute successfully with valid image config and features', async () => {
+			const res = await shellExec(`${cli} up --docker-path podman --workspace-folder ${__dirname}/configs/image --additional-features '${additionalFeatures}'`);
 			const response = JSON.parse(res.stdout);
 			assert.equal(response.outcome, 'success');
 			const containerId: string = response.containerId;
 			assert.ok(containerId, 'Container id not found.');
 			await shellExec(`podman rm -f ${containerId}`);
 		});
 
-		it('should execute successfully with valid config with features', async () => {
-			const res = await shellExec(`${cli} up --docker-path podman --workspace-folder ${__dirname}/configs/dockerfile-with-features`);
+		it('should execute successfully with valid Dockerfile config and features', async () => {
+			const res = await shellExec(`${cli} up --docker-path podman --workspace-folder ${__dirname}/configs/dockerfile-without-features --additional-features '${additionalFeatures}'`);
 			const response = JSON.parse(res.stdout);
 			assert.equal(response.outcome, 'success');
 			const containerId: string = response.containerId;