diff --git a/Dockerfile b/Dockerfile
index 4ba1b20..e3cf606 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-# Bareos director Dockerfile
+# PostgreSQL upgrade image
 FROM postgres:14-bullseye
 
 LABEL maintainer="barcus@tou.nu"
@@ -6,12 +6,12 @@ LABEL maintainer="barcus@tou.nu"
 ARG PG_NEW
 
 RUN apt-get update \
- && apt-get install -y sudo
+ && apt-get install -qq -y sudo
 
-RUN adduser postgres sudo
-RUN echo '%postgres ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers
+RUN adduser postgres sudo \
+ && echo '%postgres ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers \
+ && mkdir -p /var/log/postgresql
 
-RUN mkdir -p /var/log/postgresql
 WORKDIR /var/log/postgresql
 
 COPY docker-entrypoint.sh /docker-entrypoint.sh