Update file in a named volume

update-config.sh

#!/bin/sh

echo "Usage: $0 deploy|extract (default: deploy)"

engine=podman
script_dir="$(readlink -f "$(dirname "$0")")"
set -x
action=${1-deploy}

cc=$($engine run --rm -dtv grafana-config:/g -v prometheus-config:/p busybox)
case $action in
    extract)
        $engine cp $cc:/p/prometheus.yml "$script_dir/prometheus.yml"
    ;;
    deploy)
        $engine cp "$script_dir/prometheus.yml" $cc:/p/prometheus.yml
    ;;
esac
$engine stop -t0 $cc

$engine restart prometheus