added shell script, modified jenkinsfile, added pythorch model to the zad1

Jenkinsfile

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+pipeline {
+    agent any
+    stages {
+        stage('Clone repository') {
+            steps {
+                git branch: 'master', url: 'https://git.wmi.amu.edu.pl/s487176/ium_487176'
+            }
+        }
+        stage('Run script') {
+            steps {
+                sh 'sh getdata.sh'
+            }
+            post {
+                always {
+                    archiveArtifacts artifacts: 'test.csv, train.csv, val.csv', allowEmptyArchive: true
+                }
+            }
+        }
+    }
+}

getdata.sh

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+wget -O wine.csv https://huggingface.co/datasets/mstz/wine/raw/main/Wine_Quality_Data.csv
+
+num_rows=$(($(wc -l < wine.csv) - 1))
+
+
+CUTOFF=${1:-num_rows}
+
+train_size=$((CUTOFF * 80 / 100))
+test_size=$((CUTOFF * 10 / 100))
+
+header=$(head -n 1 wine.csv)
+tail -n +2 wine.csv | shuf > shuffled_data.csv
+echo "$header" > train.csv
+head -n $train_size shuffled_data.csv >> train.csv
+echo "$header" > val.csv
+head -n $(($train_size + $test_size)) shuffled_data.csv | tail -n $test_size >> val.csv
+echo "$header" > test.csv
+tail -n $test_size shuffled_data.csv >> test.csv
+
+
+
+rm shuffled_data.csv