add_KUBECONFIG_if_exists () {
  if [[ -f "$1" ]]; then
    local local_config
    local_config="$(mktemp)"
    cp "${1}" "${local_config}"

    kubeconfig_random="$(od -vAn -N4 -tx /dev/random | tr -d '[:space:]' | cut -c1-8)"
    container_kubeconfig+="/config/${kubeconfig_random}:"
    CONDITIONAL_HOST_MOUNTS+="--mount type=bind,source=${local_config},destination=/config/${kubeconfig_random} "
  fi