Docker build arg

[dodopontocom]

Hello Team,
I am trying to use lib for docker build and push, but I am getting the following error.
I understand by the documentation that "build-args" are optional, so I dont use them.
Important: I noticed two empty single quotes in the error message, the place that build-arg suppose to be

But I am getting the following error

Reproducing the error:
my_script.sh

#!/bin/bash

do.use gcp.gcr

echo ${DODRONES_GCP_MY_LABS_SA} > ${GCLOUD_JSON_KEY_PATH}

gcp.gcr.buildAndPublish "${GCLOUD_PROJECT_ID}" "${ROOT_DIR}/" \
        "Dockerfile" "web-site"

ERROR:

+ docker build -t us.gcr.io/terraform-gcp-lab/web-site:latest -f Dockerfile '' /home/rodolfo/git/web-site/
"docker build" requires exactly 1 argument.
See 'docker build --help'.

Usage:  docker build [OPTIONS] PATH | URL | -

Build an image from a Dockerfile
ERROR:  It was not possible to build docker image 'us.gcr.io/terraform-gcp-lab/web-site:latest'
        Exiting (1)...

Using a build arg it WORKED:

docker build -t "${DOCKER_IMAGE_TAG_LATEST}" -f "${_docker_file}" "${_docker_build_args[@]}" "${_docker_dir}" "--no-cache"

[masterleros]

Seems to be an issue with getargs, @frbaroni do you mind take a look?
@dodopontocom this would be a nice time to me show you how this work, let me know if you have some time to meet on hangouts