Add screenshot example of Spring Boot Admin dashboard

README.md

@@ -32,10 +32,13 @@ Features:
 - Integrates [Spring Boot
   Admin](https://github.com/codecentric/spring-boot-admin) at endpoint
   [`/admin`](http://localhost:8123/admin) to inspect the running application.
-  Note that, in production, [it is not recommended to
-  co-locate](https://docs.spring-boot-admin.com/current/faq.html) the SBA
-  server with your applications (the SBA clients) as this
-  project does for demonstration purposes.
+  Login with user `admin` and password `admin`.
+  <br />
+  <a href="https://github.com/miguno/java-docker-build-tutorial/raw/main/images/spring-boot-admin-dashboard.png"><img src="https://github.com/miguno/java-docker-build-tutorial/raw/main/images/spring-boot-admin-dashboard.png" alt="Spring Boot Admin screenshot" width="300"></a>
+  - Note that, in production, [it is not recommended to
+    co-locate](https://docs.spring-boot-admin.com/current/faq.html) the SBA
+    server with your applications (the SBA clients) as this project does for
+    demonstration purposes.
 - Maven for build management (see [pom.xml](pom.xml)), using
   [Maven Wrapper](https://github.com/apache/maven-wrapper)
 - [GitHub Actions workflows](https://github.com/miguno/java-docker-build-tutorial/actions) for