fix: set "CACHEBUST=1" for package installation tasks

gitlab-ci/Dockerfile

@@ -6,21 +6,21 @@ ENV EXLIBRIS_REPO=https://github.com/ExLibrisGroup/Rosetta.dps-sdk-projects.git
 ENV EXLIBRIS_REPODIR=Rosetta.dps-sdk-projects
 ENV EXLIBRIS_PATH=/exlibris
 
+ARG CACHEBUST=1
 RUN apt-get update; \
     apt-get install -y --no-install-recommends gnupg wget; \
     wget -O - http://sdvdebianrepo.slub-dresden.de/deb-repository/pub.gpg.key | apt-key add - ; \
     echo "deb http://sdvdebianrepo.slub-dresden.de/deb-repository bullseye main" > /etc/apt/sources.list.d/slub.list;
 
+ARG CACHEBUST=1
 RUN apt-get update; \
     apt-get -y upgrade; \
     apt-get install -y \
-      apt-file \
       apt-utils \
       make \
       openjdk-17-jdk \
       junit4 \
       git \
     ;
-RUN apt-file update;
 RUN git clone https://github.com/ExLibrisGroup/Rosetta.dps-sdk-projects.git
 RUN ln -s ${EXLIBRIS_REPODIR} ${EXLIBRIS_PATH}