File cuda-setup of Package cuda-library-container

#!/bin/bash
#set -x
PACKAGE_LIST=(
	cuda-libraries
	)
UPDATE=false

_update_package_cache() {
    echo "Updating the package cache..."
    FLAVOR="$(echo ${KERNEL_VERSION} | cut -d- -f3)"
    if [ "$FLAVOR" == "azure" ]; then
	# consumed by container-suseconnect when calling `zypper refresh`
	export ADDITIONAL_MODULES="sle-module-public-cloud"
    fi
    if [ -n "${CUDA_REPO_FINGERPRINT}" ]; then
        fpr_tail=${CUDA_REPO_FINGERPRINT: -8:8}
	if  ! rpm --quiet -q gpg-pubkey-${fpr_tail,,*}; then
	    filename=${fpr_tail}.pub
	    eval $(grep baseurl /etc/zypp/repos.d/CUDA.repo)
	    if ! curl -fsS  ${baseurl}/$filename > /tmp/$filename; then
		echo "FATAL: CUDA Repo Key not found!"
		exit 1;
	    fi
	    fpr=$(gpg --with-colons --import-options show-only --import --fingerprint < /tmp/${filename} | grep "^fpr:" | cut -d: -f 10)
	    if [ "$fpr" != "$CUDA_REPO_FINGERPRINT" ]; then
		echo "FATAL: CUDA Repo Key Fingerprint does not match known one!"
		exit 1
	    fi
	    if [ -x /usr/bin/rpmkeys ]; then
		/usr/bin/rpmkeys --import /tmp/${filename}
	    else
		rpm --import /tmp/$filename
	    fi
	    if [ $? -ne 0 ]; then
		echo "FATAL: Import of CUDA Repo Key failed!"
		exit 1
	    fi
	    else UPDATE=true
	fi
    else
	echo "FATAL: Fingerprint of CUDA Repo Key unknown!"
	exit 1
    fi

    if ! zypper --non-interactive refresh CUDA || ! zypper refresh; then
        echo "FATAL: failed to reach SUSE package repositories. "\
             "Ensure that the cluster can access the proper networks."
        exit 1
    fi
}

_cleanup_package_cache() {
    echo "Cleaning up the package cache..."
    zypper clean
}

install_update_cuda_components() {
    local package_list
    if $UPDATE; then echo "Installing:"; else echo "Updating:"; fi
    for i in ${PACKAGE_LIST[@]}; do
	echo "$i-${CUDA_VERSION/./-}"
	package_list+="$i-${CUDA_VERSION/./-} "
    done
    if $UPDATE; then
	zypper --non-interactive update -y $package_list
    else
	zypper --non-interactive install -y $package_list
    fi
    echo "Done"
}

_update_package_cache
install_update_cuda_components
_cleanup_package_cache