Merge pull request 'OZG-4717 OZG-5080 Use the build.number in jenkins, again'...

Merge pull request 'OZG-4717 OZG-5080 Use the build.number in jenkins, again' (#21) from OZG-4717-BasicSetupJenkins into master

Reviewed-on: https://git.ozg-sh.de/ozgcloud-app/administration/pulls/21

Jenkinsfile

@@ -13,6 +13,7 @@ pipeline {
         IMAGE_TAG = generateImageTag()
         HELM_CHART_VERSION = generateHelmChartVersion()
         BUILD_PROFILE = getBuildProfile()
+        BUILD_NUMBER = env.BUILD_NUMBER
     }
 
     options {
@@ -116,7 +117,7 @@ pipeline {
                 
                 configFileProvider([configFile(fileId: 'maven-settings', variable: 'MAVEN_SETTINGS')]) {
                     withCredentials([usernamePassword(credentialsId: 'jenkins-nexus-login', usernameVariable: 'USER', passwordVariable: 'PASSWORD')]) {
-                        sh 'mvn -s $MAVEN_SETTINGS spring-boot:build-image -DskipTests -Dmaven.wagon.http.retryHandler.count=3 $BUILD_PROFILE -Ddocker.publishRegistry.username=${USER} -Ddocker.publishRegistry.password=${PASSWORD}'
+                        sh "mvn -s $MAVEN_SETTINGS spring-boot:build-image -DskipTests -Dmaven.wagon.http.retryHandler.count=3 $BUILD_PROFILE -Ddocker.publishRegistry.username=${USER} -Ddocker.publishRegistry.password=${PASSWORD} -Dbuild.number=$BUILD_NUMBER"
                     }
                 }
             }