Jenkins script mod

Jenkinsfile

@@ -1,41 +1,35 @@
-pipeline {
-    agent any
-    parameters {
+node {
+    stage('Preparation') {
+        properties ([
+            parameters([
                 string(
                     defaultValue:'mateuszogrodowczyk',
                     description: 'Kaggle username',
                     name: 'KAGGLE_USERNAME',
                     trim: false
-        )
+                ),
                 password(
                     defaultValue: '',
                     description: 'Kaggle access token retrieved from kaggle.json file - https://github.com/Kaggle/kaggle-api#api-credentials',
                     name: 'KAGGLE_KEY'
                 )
+            ])
+        ])
     }
-    environment {
-        KAGGLE_USERNAME="$params.KAGGLE_USERNAME"
-        KAGGLE_KEY="$params.KAGGLE_KEY"
-    }
-    stages {
-        stage('Install depends.') {
-            steps {
-                sh "pip install --user -r requirements.txt"
-            }
-        }
-        stage('Prepare dataset') {
-            steps {
-                script {
+}
+
+stage('Install depends.') {
+            sh 'pip install --user -r requirements.txt'
+}
+stage('Prepare dataset') {
     withEnv([
         "KAGGLE_USERNAME=${params.KAGGLE_USERNAME}",
         "KAGGLE_KEY=${params.KAGGLE_KEY}"
-                    ])
+    ]) {
         sh 'echo Welcome: $KAGGLE_USERNAME'
         sh 'kaggle datasets list'
     }
-                sh "chmod u+x ./load_data.sh"
-                sh "./load_data.sh"
-            }
-        }
-    }
+
+    sh 'chmod u+x ./load_data.sh'
+    sh './load_data.sh'
 }