Попытка вычленить версию через shell

Jenkinsfile

@@ -18,23 +18,20 @@ pipeline {
         stage('Extract VERSION') {
             steps {
                 script {
-                    def versionFile = "src/main/resources/META-INF/ncore-product/${env.PRODUCT_GROUP}/version.properties"
-                    if (!fileExists(versionFile))
-                        error "Version file not found: ${versionFile}"
-                    def versionText = ""
-                    readFile(file: versionFile).readLines().each {
-                        if (it.contains('version'))
-                            versionText += it.trim();
-                    }
-                    echo versionText
-                    def m = (versionText =~ /^version=(((\d+\.)*\d+)(?:-[A-Za-z]+)?)$/)
+                    env.VERSION = sh(
+                        script: """
+                            set -e
+                            VERSION=\$(sed -n 's/^version=//p' ${versionFile})
 
-                    if (!m.find()) {
-                        error "Invalid version format: ${versionText}"
-                    }
+                            if [[ ! "\$VERSION" =~ ^[0-9]+(\\.[0-9]+)*(-[A-Za-z]+)?$ ]]; then
+                                echo "Invalid version format: \$VERSION" >&2
+                                exit 1
+                            fi
 
-                    env.VERSION = m.group(1)
-                    echo "Extracted VERSION: ${env.VERSION}"
+                            echo "\$VERSION"
+                        """,
+                        returnStdout: true
+                    ).trim()
                 }
             }
         }