Fix yarn cache not being found and crashing build in CI

Jenkinsfile

@@ -27,6 +27,8 @@ pipeline {
             value: "/home/jenkins"
           - name: "MAVEN_OPTS"
             value: "-Duser.home=/home/jenkins"
+          - name: "YARN_CACHE_FOLDER"
+            value: "/home/jenkins/.cache yarn install"
           volumeMounts:
           - name: m2-repo
             mountPath: /home/jenkins/.m2/repository