env variable

Jenkinsfile

@@ -11,6 +11,11 @@ pipeline {
             description: 'Value for head command', 
             name: 'CUTOFF'
         )
+        password(
+            defaultValue: '',
+            description: 'Kaggle token taken from kaggle.json file, as described in https://github.com/Kaggle/kaggle-api#api-credentials',
+            name: 'KAGGLE_KEY'
+        )
     }
     stages {
         stage("Check out from version control") {