Add staging environment and deploy job

.gitlab-ci.yml

@@ -59,11 +59,27 @@ k8s-2019_dev-deploy:
   - kubectl --token "${GL_KUBE_TOKEN}" set image deployment/symposion-app symposion-app=asia.gcr.io/linuxconfsydney/symposion_app_2019_dev:$CI_COMMIT_SHA
   when: manual
   only:
-  - dev/2019
+  - dev/*
   environment:
     name: dev_2019
     url: https://dev.lca2019.org
 
+k8s-2019_staging-deploy:
+  image: google/cloud-sdk
+  stage: deploy
+  script:
+  - echo "${CA_CERT}" > cert.crt
+  - kubectl config set-cluster cluster --server="${KUBE_SERVER}" --embed-certs=true --certificate-authority=cert.crt
+  - kubectl config set-context cluster --cluster=cluster --namespace=lca2019-staging --user=gitlab-ci
+  - kubectl config use-context cluster
+  - kubectl --token "${GL_KUBE_TOKEN}" set image deployment/symposion-app symposion-app=asia.gcr.io/linuxconfsydney/symposion_app_2019_dev:$CI_COMMIT_SHA
+  when: manual
+  only:
+  - dev/2019
+  environment:
+    name: staging
+    url: https://staging.lca2019.org
+
 .docs_template: &sphinx
   image: alpine
   script: