Configure Maven jar packaging

Author: Holger Harms

pom.xml

@@ -5,14 +5,15 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.4.0</version>
+        <version>2.6.1</version>
         <relativePath/> <!-- lookup parent from repository -->
     </parent>
     <groupId>de.holhar</groupId>
     <artifactId>accounting</artifactId>
     <version>0.0.1-SNAPSHOT</version>
     <name>accounting</name>
     <description>Demo project for Spring Boot</description>
+    <packaging>jar</packaging>
 
     <properties>
         <java.version>11</java.version>
@@ -48,6 +49,11 @@
                 <artifactId>maven-resources-plugin</artifactId>
                 <version>3.1.0</version>
             </plugin>
+
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
         </plugins>
     </build>