First build the docker images and push them to the GCP container registry.
gcloud builds submit --tag europe-west1-docker.pkg.dev/tactiqal/hello-repo/gameserver ./server
gcloud builds submit --tag europe-west1-docker.pkg.dev/tactiqal/hello-repo/gameclient ./client
Once the builds have completed, deploy the images to the GKE cluster.
kubectl apply -f server/deployment.yaml -f server/service.yaml -f client/deployment.yaml