upgrade maven-assembly-version

assembly.xml

@@ -1,10 +1,12 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<assembly xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2 http://maven.apache.org/xsd/assembly-1.1.2.xsd">
+<assembly xmlns="http://maven.apache.org/ASSEMBLY/2.2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+		  xsi:schemaLocation="http://maven.apache.org/ASSEMBLY/2.2.0 https://maven.apache.org/xsd/assembly-2.2.0.xsd">
+
 	<id>distribution</id>
 	<formats>
 		<format>zip</format>
 	</formats>
+
 	<fileSets>
 		<fileSet>
 			<directory>${project.basedir}/src/main/resources</directory>
@@ -20,6 +22,7 @@
 			<fileMode>0777</fileMode>
 		</fileSet>
 	</fileSets>
+
 	<dependencySets>
 		<dependencySet>
 			<useProjectArtifact>true</useProjectArtifact>

pom.xml

@@ -78,6 +78,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-assembly-plugin</artifactId>
+                <version>${maven-assembly-version}</version>
                 <configuration>
                     <finalName>examcloud-ws</finalName>
                     <skipAssembly>${skipAssembly}</skipAssembly>
@@ -90,7 +91,7 @@
                         <id>make-assembly</id>
                         <phase>install</phase>
                         <goals>
-                            <goal>assembly</goal>
+                            <goal>single</goal>
                         </goals>
                     </execution>
                 </executions>