JAVA-29231 Move modules inside existing container modules (#15492)

docker-modules/jib/src/main/java/com/baeldung/GreetingController.java

@@ -0,0 +1,20 @@
+package com.baeldung;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.concurrent.atomic.AtomicLong;
+
+@RestController
+public class GreetingController {
+
+    private static final String template = "Hello Docker, %s!";
+    private final AtomicLong counter = new AtomicLong();
+
+    @GetMapping("/greeting")
+    public Greeting greeting(@RequestParam(value="name", defaultValue="World") String name) {
+        return new Greeting(counter.incrementAndGet(),
+          String.format(template, name));
+    }
+}