Wrap vars in script call to avoid insecure call detection

vars/dockerBuild.groovy

@@ -0,0 +1,16 @@
+def call(Map args = [:]) {
+    script {
+        if (!args.imageName || !args.dockerfile || !args.context) {
+            error "dockerBuild requires imageName, dockerfile, and context arguments"
+        }
+
+        def imageName = args.imageName
+        def dockerfile = args.dockerfile
+        def context = args.context
+
+        echo "Building Docker image: ${imageName}"
+        sh """
+            docker build -t ${imageName} -f ${dockerfile} ${context}
+        """
+    }
+}