Deploy the API to a staging env

Install:

(kubectl)[https://kubernetes.io/docs/tasks/tools/install-kubectl/#install-kubectl]
(gcloud sdk)[https://cloud.google.com/sdk/install]

Then create a Kubernetes cluster:

Create a GCP project and enable the Kubernetes Engine API
Create a cluster gcloud container clusters create <CLUSTER_NAME>
Connect to this cluster gcloud container clusters get-credentials <CLUSTER_NAME> --zone <CLUSTER_ZONE> --project <PROJECT_ID>

Build and store your docker images:

docker build -t gcr.io/<PROJECT_ID>/php:<RELEASE_NUMBER> . --target api_php
docker build -t gcr.io/<PROJECT_ID>/nginx:<RELEASE_NUMBER> . --target api_nginx
docker push gcr.io/<PROJECT_ID>/php:<RELEASE_NUMBER> and docker push gcr.io/<PROJECT_ID>/nginx:<RELEASE_NUMBER>

Modify the nginx-deployment.yaml and the php-deplyment.yaml files to put the docker images you've just pushed.

Run kubectl appy -f devops/.

Wait a few minutes, run kubectl get ingress you will find the IP of your staging.