test: add docker and proc e2e testing

tests/integration/api/api-keys.test.ts

@@ -0,0 +1,12 @@
+import { describe, expect, test } from "vitest";
+
+import { getRuntimeClient, HS_VERSIONS } from "../setup/env";
+
+describe.for(HS_VERSIONS)("Headscale %s: API Keys", (version) => {
+  test("api keys can be fetched", async () => {
+    const client = await getRuntimeClient(version);
+    const apiKeys = await client.getApiKeys();
+    expect(Array.isArray(apiKeys)).toBe(true);
+    expect(apiKeys.length).toBe(1);
+  });
+});