diff --git a/build-icecast.jenkins b/build-icecast.jenkins
index ef684bb..689b501 100644
--- a/build-icecast.jenkins
+++ b/build-icecast.jenkins
@@ -49,7 +49,7 @@ CMD ["/bin/sh", "-c", "icecast -c \\"\${CONFIG_FILE}\\""]
                 container ('kaniko') {
                     script {
                         declarativeFunctions.buildContainerMultipleDestinations(
-                            dockerFile: readFile(file: "${workspace}/Dockerfile"),
+                            dockerFile: dockerFile,
                             repositoryAccess: [
                                 [
                                     repository: repository,
diff --git a/build-php.jenkins b/build-php.jenkins
index 6f3048d..b74f0bf 100644
--- a/build-php.jenkins
+++ b/build-php.jenkins
@@ -50,7 +50,7 @@ RUN apt-get update && \\
                 container ('kaniko') {
                     script {
                         declarativeFunctions.buildContainerMultipleDestinations(
-                            dockerFile: readFile(file: "${workspace}/Dockerfile"),
+                            dockerFile: dockerFile,
                             repositoryAccess: [
                                 [
                                     repository: repository,