Google Cloud Cli Authentication inside docker, sharing your docker host daemon for pushing images. No need to install Gcloud Cli on your system.

gcloud_cli_docker.sh

## Execute this commands over your working tree.
docker pull google/cloud-sdk:latest
docker run -ti  google/cloud-sdk:latest gcloud version
docker run -ti --name gcloud-config google/cloud-sdk gcloud auth login
docker run --rm -ti --volumes-from gcloud-config google/cloud-sdk gcloud config set project <your_project_id_here>
docker run --rm -ti -v $(pwd):/src -v /var/run/docker.sock:/var/run/docker.sock:ro --volumes-from gcloud-config google/cloud-sdk bash

## Optional, set up your kubernetes credentials.
gcloud container clusters get-credentials <your_kubernetes_cluster> --zone <gcloud_cluster_zone> --project <your_project_id_here>