docker_tags(){
  if hash curl 2>/dev/null; then
    if hash jq 2>/dev/null; then
      curl -s -S "https://registry.hub.docker.com/v2/repositories/library/$1/tags/" | jq '."results"[]["name"]' |sort
    else
      echo "Install jq"
    fi
  else
    echo "Install curl"
  fi
}