Add temporary step to install maven 3.9.0

Author: tortmayr

Jenkinsfile

@@ -65,9 +65,31 @@ pipeline {
         YARN_CACHE_FOLDER = "${env.WORKSPACE}/yarn-cache"
         SPAWN_WRAP_SHIM_ROOT = "${env.WORKSPACE}"
         EMAIL_TO= "[email protected]"
+        MAVEN_VERSION = "3.9.7"
+
     }
 
     stages {
+        stage('Setup Maven') {
+            steps {
+                container('ci') {
+                    sh '''
+                        # Download Maven 3.9.0
+                        curl -o maven.tar.gz -L https://downloads.apache.org/maven/maven-3/${MAVEN_VERSION}/binaries/apache-maven-${MAVEN_VERSION}-bin.tar.gz
+                        # Extract Maven
+                        tar -xzf maven.tar.gz -C ${WORKSPACE}
+                        # Clean up tar file
+                        rm -f maven.tar.gz
+                    '''
+                    // Set MAVEN_HOME manually
+                    script {
+                        env.MAVEN_HOME = "${env.WORKSPACE}/apache-maven-${env.MAVEN_VERSION}"
+                        env.PATH = "${env.MAVEN_HOME}/bin:${env.PATH}"
+                    }
+                    sh "echo 'MAVEN_HOME set to ${env.MAVEN_HOME}'"
+                }
+            }
+        }
         stage('Build client') {
             steps {
                 container('ci') {