Added test for labels with dockerfile

Author: Roman Bäriswyl

src/test/cli.build.test.ts

@@ -27,7 +27,7 @@ describe('Dev Containers CLI', function () {
 
 	describe('Command build', () => {
 
-		it('should build successfully with valid image metadata --label property', async () => {
+		it('should build successfully with valid image metadata --label property (image)', async () => {
 			const testFolder = `${__dirname}/configs/example`;
 			const response = await shellExec(`${cli} build --workspace-folder ${testFolder} --label 'name=label-test' --label 'type=multiple-labels'`);
 			const res = JSON.parse(response.stdout);
@@ -36,6 +36,15 @@ describe('Dev Containers CLI', function () {
 			assert.match(labels.stdout.toString(), /\"name\": \"label-test\"/);
 		});
 
+		it('should build successfully with valid image metadata --label property (dockerfile)', async () => {
+			const testFolder = `${__dirname}/configs/example-dockerfile`;
+			const response = await shellExec(`${cli} build --workspace-folder ${testFolder} --label 'name=label-test' --label 'type=multiple-labels'`);
+			const res = JSON.parse(response.stdout);
+			assert.equal(res.outcome, 'success');
+			const labels = await shellExec(`docker inspect --format '{{json .Config.Labels}}' ${res.imageName} | jq`);
+			assert.match(labels.stdout.toString(), /\"name\": \"label-test\"/);
+		});
+
 		it('should fail to build with correct error message for local feature', async () => {
 			const testFolder = `${__dirname}/configs/image-with-local-feature`;
 			try {

src/test/configs/example-dockerfile/.devcontainer.json

@@ -0,0 +1,11 @@
+// Example devcontainer.json configuration with a Dockerfile
+{
+	"build": {
+		"dockerfile": "mcr.microsoft.com/devcontainers/base:latest"
+	},
+	"features": {
+		"ghcr.io/devcontainers/features/go:1": {
+			"version": "latest"
+		}
+	}
+}

src/test/configs/example-dockerfile/Dockerfile

@@ -0,0 +1,2 @@
+#FROM dev-containers-docker-local.repo.pnet.ch/pf/additional/dev-container-build:1.0.202410310854
+FROM linux-docker-local.repo.pnet.ch/pf/debian:11.0.202410081002-bullseye