Update jib plugin config to stream sample

dataflow-website/stream-developer-guides/streams/standalone-stream-sample/pom.xml

@@ -43,6 +43,22 @@
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-maven-plugin</artifactId>
             </plugin>
+            <plugin>
+                <groupId>com.google.cloud.tools</groupId>
+                <artifactId>jib-maven-plugin</artifactId>
+                <version>2.0.0</version>
+                <configuration>
+                    <from>
+                        <image>springcloud/openjdk</image>
+                    </from>
+                    <to>
+                        <image>${docker.org}/${project.artifactId}:${docker.version}</image>
+                    </to>
+                    <container>
+                        <creationTime>USE_CURRENT_TIMESTAMP</creationTime>
+                    </container>
+                </configuration>
+            </plugin>
         </plugins>
     </build>
 
@@ -173,4 +189,4 @@
             </snapshots>
         </pluginRepository>
     </pluginRepositories>
-</project>
+</project>