Scale Out and Update a Containerized Application on a Kubernetes Cluster https://www.qwiklabs.com/focuses/1739?parent=catalog

command.sh

#step 0
gcloud config set project your_project_id_here
gsutil cp -r gs://$DEVSHELL_PROJECT_ID/ .
tar -xf source_code_file

#step1 
docker build . -t echo-app
docker tag echo-app gcr.io/$DEVSHELL_PROJECT_ID:latest
docker push gcr.io/$DEVSHELL_PROJECT_ID:latest

#step2 
gcloud container clusters get-credentials echo-cluster

kubectl edit deployment echo-web
# update the url of image

kubectl scale deployment echo-web --replicas=2

# DONE