add release support

pom.xml

@@ -22,17 +22,23 @@
   <properties>
     <java.version>11</java.version>
   </properties>
-
-  <dependencies>
-  </dependencies>
-
   <build>
     <plugins>
       <plugin>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-maven-plugin</artifactId>
       </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-release-plugin</artifactId>
+        <configuration>
+          <goals>install</goals>
+        </configuration>
+      </plugin>
     </plugins>
   </build>
+  <scm>
+    <developerConnection>scm:git:git@github.com:marc-wagner/spring-petclinic.git</developerConnection>
+  </scm>
 
 </project>

release.properties

@@ -0,0 +1,11 @@
+#release configuration
+#Mon Nov 23 22:37:23 CET 2020
+projectVersionPolicyId=default
+scm.tagNameFormat=@{project.artifactId}-@{project.version}
+remoteTagging=true
+scm.commentPrefix=[maven-release-plugin] 
+pushChanges=true
+completedPhase=check-poms
+scm.url=scm\:git\:git@github.com\:marc-wagner/spring-petclinic.git
+exec.snapshotReleasePluginAllowed=false
+preparationGoals=clean verify