add env var

Jenkinsfile

@@ -1,9 +1,31 @@
 pipeline {
     agent any
     stages {
-        stage("Hello") {
-            steps {
-                echo "Start.."
+        stage('Preparation') { 
+            properties([
+                parameters([
+                    string(
+                        defaultValue: 'mikolaj2',
+                        description: 'Kaggle username',
+                        name: 'KAGGLE_USERNAME',
+                        trim: false
+                    ),
+                    password(
+                        defaultValue: '',
+                        description: 'Kaggle token taken from kaggle.json file, as described in https://github.com/Kaggle/kaggle-api#api-credentials',
+                        name: 'KAGGLE_KEY'
+                    )
+                    string(
+                        defaultValue: '',
+                        description: 'Value for head command',
+                        name: 'CUTOFF'
+                    )
+                ])
+            ])
+            environment {
+                KAGGLE_USERNAME="$params.KAGGLE_USERNAME"
+                KAGGLE_KEY="$params.KAGGLE_KEY"
+                CUTOFF="$params.CUTOFF"
             }
         }
         stage("Check out from version control") {
@@ -11,10 +33,10 @@ pipeline {
                 checkout scm
             }
         }
-
         stage("Shell Script") {
             steps {
                 sh "chmod u+x ./startscript.sh"
+                sh "KAGGLE_USERNAME=${KAGGLE_USERNAME} KAGGLE_KEY=${KAGGLE_KEY} CUTOFF=${CUTOFF} ./startscript.sh"
                 archiveArtifacts 'data.txt'
             }
         }