Update Jenkinsfile

Jenkinsfile

@@ -6,11 +6,6 @@ pipeline {
     string(name: 'CUTOFF', defaultValue: '100', description: 'cut off number')
     }
     stages {
-        stage('Git Checkout') {
-            steps {
-               checkout scm
-            }
-        }
      stage('Build') {
          steps {
             script {
@@ -18,6 +13,7 @@ pipeline {
                           "KAGGLE_KEY=${params.KAGGLE_KEY}" ]) {
                     def customImage = docker.build("custom-image")
                     customImage.inside {
+                        checkout scm
                         sh 'bash ./get_dataset.sh $CUTOFF'
                         archiveArtifacts artifacts: 'artifacts/*', onlyIfSuccessful: true
                     }