check rpms installed in a container (or diff two containers)

check-rpms-installed-in-container.sh

# copied from a jenkins job last used in Dec 2019 for CRW 2.0

alias dr='docker run --rm --entrypoint /bin/bash'

if [[ ${CONTAINER1} ]]; then
  dr ${CONTAINER1} -c "rpm -qa | sort" | tee CONTAINER1.installed.rpms.txt &
fi
if [[ ${CONTAINER2} ]]; then
  dr ${CONTAINER2} -c "rpm -qa | sort" | tee CONTAINER2.installed.rpms.txt &
fi
wait
if [[ ${CONTAINER1} ]] && [[ ${CONTAINER2} ]]; then
  diff --unified=1 --suppress-common-lines --ignore-all-space \
    CONTAINER1.installed.rpms.txt CONTAINER2.installed.rpms.txt | tee CONTAINERs.diff.rpms.txt
fi

set +x
if [[ $(cat CONTAINERs.diff.rpms.txt) ]]; then 
  echo "STATUS='RPM CHANGE in ${CONTAINER1} vs. ${CONTAINER2}'"
else 
  echo "STATUS='NO RPM CHANGE in ${CONTAINER1} vs. ${CONTAINER2}'"
fi

docker rmi ${CONTAINER1} ${CONTAINER2}

cat CONTAINERs.diff.rpms.txt