diff --git a/images/jobber/Dockerfile b/images/jobber/Dockerfile
index 0f8b2da3..5f76caa9 100644
--- a/images/jobber/Dockerfile
+++ b/images/jobber/Dockerfile
@@ -1,5 +1,5 @@
 FROM alpine:3.20.0
-
+ 
 RUN apk --no-cache add curl jq
 
 WORKDIR /opt/mediawiki
diff --git a/images/nbserve/Dockerfile b/images/nbserve/Dockerfile
index 18f84f57..7736113c 100644
--- a/images/nbserve/Dockerfile
+++ b/images/nbserve/Dockerfile
@@ -1,5 +1,5 @@
 FROM ubuntu:24.04
-
+ 
 ENV DEBIAN_FRONTEND=noninteractive
 RUN apt-get update \
     && apt-get install -y --no-install-recommends \
diff --git a/images/paws-hub/Dockerfile b/images/paws-hub/Dockerfile
index 3b735c6b..f67d49c2 100644
--- a/images/paws-hub/Dockerfile
+++ b/images/paws-hub/Dockerfile
@@ -1,4 +1,5 @@
 FROM jupyterhub/k8s-hub:3.3.8
+
 ARG NB_USER=tools.paws
 ARG NB_UID=52771
 ARG HOME=/home/paws
diff --git a/images/renderer/Dockerfile b/images/renderer/Dockerfile
index b740f5a3..05f939f4 100644
--- a/images/renderer/Dockerfile
+++ b/images/renderer/Dockerfile
@@ -1,5 +1,5 @@
 FROM ubuntu:24.04
-
+ 
 RUN apt-get update \
     && DEBIAN_FRONTEND=noninteractive apt-get install -y \
     python3-pip \
diff --git a/images/singleuser/Dockerfile b/images/singleuser/Dockerfile
index 61e87a2c..210e47de 100644
--- a/images/singleuser/Dockerfile
+++ b/images/singleuser/Dockerfile
@@ -1,5 +1,5 @@
 FROM ubuntu:24.04
-
+ 
 ENV PYWIKIBOT_VERSION=9.5.0
 ENV EDITOR=/bin/nano
 ENV PYWIKIBOT_DIR=/srv/paws