diff --git a/on-boot-script/Dockerfile b/on-boot-script/Dockerfile
index dcb9485b..3b586c00 100644
--- a/on-boot-script/Dockerfile
+++ b/on-boot-script/Dockerfile
@@ -10,12 +10,12 @@ RUN set -ex \
     && (curl -sSL https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/Debian_10/Release.key | apt-key add -) \
     && apt-get update \
     && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
-	build-essential \
-        devscripts \
-	fakeroot \
-	debhelper \
-        qemu-user-static \
-        buildah \
+    build-essential \
+    devscripts \
+    fakeroot \
+    debhelper \
+    qemu-user-static \
+    buildah \
     && apt-get -y autoremove \
     && apt-get clean \
     && rm -rf /tmp/* /var/tmp/* /var/log/* /var/lib/apt/lists/* /var/log/alternatives.log