Add a note about browser tests being run in CI

Author: sbp

atr/docs/running-and-creating-tests.html

@@ -14,7 +14,7 @@ <h3 id="using-docker-compose">Using Docker Compose</h3>
 <p>The simplest way to run the tests is using Docker Compose, which starts both ATR and the Playwright test container:</p>
 <pre><code class="language-shell">sh tests/run-tests.sh
 </code></pre>
-<p>This uses <a href="/ref/tests/docker-compose.yml"><code>tests/docker-compose.yml</code></a> to orchestrate the test environment. The ATR server runs in one container and the Playwright tests run in another, connected via a Docker network.</p>
+<p>This uses <a href="/ref/tests/docker-compose.yml"><code>tests/docker-compose.yml</code></a> to orchestrate the test environment. The ATR server runs in one container and the Playwright tests run in another, connected via a Docker network. These tests are automatically run in our GitHub CI as part of <a href="/ref/.github/workflows/build.yml"><code>.github/workflows/build.yml</code></a>.</p>
 <h3 id="using-host-networking">Using host networking</h3>
 <p>If you already have ATR running locally with <code>make serve-local</code>, you can run the Playwright tests directly against it instead of using Docker Compose:</p>
 <pre><code class="language-shell">make build-playwright &amp;&amp; make run-playwright

atr/docs/running-and-creating-tests.md

@@ -25,7 +25,7 @@ The simplest way to run the tests is using Docker Compose, which starts both ATR
 sh tests/run-tests.sh
 ```
 
-This uses [`tests/docker-compose.yml`](/ref/tests/docker-compose.yml) to orchestrate the test environment. The ATR server runs in one container and the Playwright tests run in another, connected via a Docker network.
+This uses [`tests/docker-compose.yml`](/ref/tests/docker-compose.yml) to orchestrate the test environment. The ATR server runs in one container and the Playwright tests run in another, connected via a Docker network. These tests are automatically run in our GitHub CI as part of [`.github/workflows/build.yml`](/ref/.github/workflows/build.yml).
 
 ### Using host networking