Added stats

Jenkinsfile2

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+pipeline {
+    agent any
+    parameters {
+        buildSelector(
+            defaultSelector: lastSuccessful(),
+            name: 'BUILD_SELECTOR',
+            description: 'Which build to use for copying artifacts'
+        )
+    }
+    stages {
+        stage("Script") {
+            steps {
+                copyArtifacts fingerprintArtifacts: true, projectName: 's444507-create-dataset', selector: lastSuccessful() sh " ./stats.sh"
+                archiveArtifacts 'lines.txt'
+                sh './stats.sh'
+                archiveArtifacts artifacts: 'stats.txt'
+            }
+        }
+    }
+}

stats.sh

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+wc -l car_prices.csv.dev > stats.txt
+wc -l car_prices.csv.test >> stats.txt
+wc -l car_prices.csv.train >> stats.txt