docker_lazy_login() {
  [[ "$1" == "-c" ]] && echo "\0" | docker login &>/dev/null && return

  if [[ -n "${DOCKER_PASSWORD}" ]]; then
    docker login -u "${DOCKER_USER}" -p "${DOCKER_PASSWORD}"
  elif [[ -n "${DOCKER_USER}" ]]; then
    echo "Attempting docker login, found user $DOCKER_USER. Just need password"
    docker login -u "${DOCKER_USER}"
  else
    echo "Attempting docker login"
    docker login
  fi
}