Add labels from params in compose

Author: Roemer

src/spec-node/dockerCompose.ts

@@ -220,6 +220,14 @@ export async function buildAndExtendDockerCompose(configWithRaw: SubstitutedConf
 			buildOverrideContent += `      target: ${featureBuildInfo.overrideTarget}\n`;
 		}
 
+		// Add labels from params
+		if (params.additionalLabels && params.additionalLabels.length > 0) {
+			buildOverrideContent += `      labels:\n`;
+			params.additionalLabels.forEach(label => {
+				buildOverrideContent += `        - ${label}\n`;
+			});
+		}
+
 		if (!serviceInfo.build?.context) {
 			// need to supply a context as we don't have one inherited
 			const emptyDir = getEmptyContextFolder(common);

src/test/cli.build.test.ts

@@ -49,6 +49,20 @@ describe('Dev Containers CLI', function () {
 			assert.equal(labels.type, 'multiple-labels');
 		});
 
+		it('should build successfully with valid image metadata --label property (compose)', async () => {
+			const testFolder = `${__dirname}/configs/compose-without-name`;
+			const image1 = 'image-1';
+			await shellExec(`docker rmi -f ${image1}`);
+			const res = await shellExec(`${cli} build --workspace-folder ${testFolder} --image-name ${image1} --label 'name=label-test' --label 'type=multiple-labels'`);
+			const response = JSON.parse(res.stdout);
+			assert.equal(response.outcome, 'success');
+			assert.equal(response.imageName[0], image1);
+			const labelsResponse = await shellExec(`docker inspect --format '{{json .Config.Labels}}' ${response.imageName[0]}`);
+			const labels = JSON.parse(labelsResponse.stdout);
+			assert.equal(labels.name, 'label-test');
+			assert.equal(labels.type, 'multiple-labels');
+		});
+
 		it('should fail to build with correct error message for local feature', async () => {
 			const testFolder = `${__dirname}/configs/image-with-local-feature`;
 			try {