Group some run in dockerfile

Dockerfile

@@ -1,17 +1,17 @@
-# Bareos director Dockerfile
+# PostgreSQL upgrade image
 FROM postgres:14-bullseye
 
 LABEL maintainer="[email protected]"
 
 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