diff --git a/Jenkinsfile b/Jenkinsfile
index 9e2fa2d..ffbd372 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -1,52 +1,56 @@
 node {
- stage('Preparation') { 
-     properties([
-         parameters([
-             string(
-                 defaultValue: 'lukkoz2',
-                 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: '6000', 
-                 description: 'Number of positions to be saved', 
-                 name: 'CUTOFF',
-                 trim: false
-			)
-         ])
-     ])
- }
+	def dockerImage = docker.build("lukkoz2")
+	
+	dockerImage.inside {
+		stage('Preparation') { 
+			 properties([
+				 parameters([
+					 string(
+						 defaultValue: 'lukkoz2',
+						 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: '6000', 
+						 description: 'Number of positions to be saved', 
+						 name: 'CUTOFF',
+						 trim: false
+					)
+				 ])
+			 ])
+		 }
 
-        stage('checkout: Check out from version control') {
-                checkout([$class: 'GitSCM',
-                          branches: [[name: '*/master']],
-                          extensions: [],
-                          userRemoteConfigs: [[credentialsId: 's425850', url: 'https://git.wmi.amu.edu.pl/s425850/ium_425850']]])
-            }
-      
+		stage('checkout: Check out from version control') {
+				checkout([$class: 'GitSCM',
+						  branches: [[name: '*/master']],
+						  extensions: [],
+						  userRemoteConfigs: [[credentialsId: 's425850', url: 'https://git.wmi.amu.edu.pl/s425850/ium_425850']]])
+		}
+			  
 
-stage('Build') {
-     // Run the maven build
-     withEnv(["KAGGLE_USERNAME=${params.KAGGLE_USERNAME}",
-              "KAGGLE_KEY=${params.KAGGLE_KEY}" ]) {
-         sh 'echo KAGGLE_USERNAME: $KAGGLE_USERNAME'
-         sh 'chmod u+x ./get_dataset.sh'
-         sh './get_dataset.sh'
-     }
-  }
-  
-stage('Cut data') {
-        withEnv(["CUTOFF=${params.CUTOFF}"]) {
-        sh '''head -n $((CUTOFF)) books_edited.csv > books_edited_cut.csv'''}
-    }
-  
-stage('Save data into artifacts') {
-	archiveArtifacts artifacts: 'books_edited.csv', followSymlinks: false
+		stage('Build') {
+			 // Run the maven build
+			 withEnv(["KAGGLE_USERNAME=${params.KAGGLE_USERNAME}",
+					  "KAGGLE_KEY=${params.KAGGLE_KEY}" ]) {
+				 sh 'echo KAGGLE_USERNAME: $KAGGLE_USERNAME'
+				 sh 'chmod u+x ./get_dataset.sh'
+				 sh './get_dataset.sh'
+			 }
+		  }
+		  
+		stage('Cut data') {
+				withEnv(["CUTOFF=${params.CUTOFF}"]) {
+				sh '''head -n $((CUTOFF)) books_edited.csv > books_edited_cut.csv'''}
+			}
+		  
+		stage('Save data into artifacts') {
+			archiveArtifacts artifacts: 'books_edited.csv', followSymlinks: false
+			}
 	}
 }
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