Very minor containers cleanups/improvements (#9925)

* clarify docker build error message

* make containers.dev e2e build test runnable even without an account id

* update wrong class name in worker-configuration.d.ts

* remove unnecessary catch params

Author: dario-piotrowicz

.changeset/hot-rice-read.md

@@ -0,0 +1,5 @@
+---
+"@cloudflare/containers-shared": patch
+---
+
+clarify the docker build error message

fixtures/container-app/worker-configuration.d.ts

@@ -1,6 +1,6 @@
 declare namespace Cloudflare {
 	interface Env {
-		CONTAINER: DurableObjectNamespace<import("./src").Container>;
+		CONTAINER: DurableObjectNamespace<import("./src").FixtureTestContainer>;
 	}
 }
 interface Env extends Cloudflare.Env {}

packages/containers-shared/src/build.ts

@@ -69,7 +69,7 @@ export function dockerBuild(
 			resolve();
 		} else if (!errorHandled) {
 			errorHandled = true;
-			reject(new Error(`Build exited with code: ${code}`));
+			reject(new Error(`Docker build exited with code: ${code}`));
 		}
 	});
 	child.on("error", (err) => {

packages/containers-shared/src/images.ts

@@ -118,7 +118,7 @@ export function resolveImageName(accountId: string, image: string): string {
 	let url: URL;
 	try {
 		url = new URL(`http://${image}`);
-	} catch (_) {
+	} catch {
 		return image;
 	}