docs: update demo

jib-demo/pom.xml

@@ -28,9 +28,14 @@
   <dependencies>
     <dependency>
       <groupId>org.springframework.boot</groupId>
-      <artifactId>spring-boot-starter-web</artifactId>
+      <artifactId>spring-boot-starter</artifactId>
     </dependency>
 
+    <dependency>
+      <groupId>org.projectlombok</groupId>
+      <artifactId>lombok</artifactId>
+      <optional>true</optional>
+    </dependency>
     <dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-test</artifactId>
@@ -63,10 +68,7 @@
             <jvmFlags>
               <jvmFlag>-server</jvmFlag>
               <jvmFlag>-XX:+UseZGC</jvmFlag>
-              <jvmFlag>-Dfile.encoding=UTF-8</jvmFlag>
-              <jvmFlag>-Djava.net.preferIPv4Stack=true</jvmFlag>
-              <jvmFlag>-XshowSettings:vm</jvmFlag>
-              <jvmFlag>-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=*:5005</jvmFlag>
+              <jvmFlag>-Dmy</jvmFlag>
             </jvmFlags>
             <args>
               <arg>some</arg>

jib-demo/src/main/java/org/example/jibdemo/JibDemoApplication.java

@@ -1,12 +1,32 @@
 package org.example.jibdemo;
 
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.boot.ApplicationRunner;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
 
+@Slf4j
 @SpringBootApplication
 public class JibDemoApplication {
 
   public static void main(String[] args) {
     SpringApplication.run(JibDemoApplication.class, args);
   }
+
+  @Bean
+  ApplicationRunner printEnv() {
+    return args -> {
+      log.info("=== System Env ===");
+      System.getenv().forEach((k, v) -> log.info("{}={}", k, v));
+
+      log.info("=== System Properties ===");
+      System.getProperties().forEach((k, v) -> log.info("{}={}", k, v));
+
+      log.info("=== Received {} Args ===", args.getSourceArgs().length);
+      for (String arg : args.getSourceArgs()) {
+        log.info("{}", arg);
+      }
+    };
+  }
 }