.gitlab-ci.yml

image: docker:19.03.5

services:
    - docker:19.03.5-dind

stages:
    - build
    - production

variables:
    GKE_CLUSTER_NAME: foobar-cluster
    GKE_ZONE: us-east1-d
    GKE_PROJECT: foobar
    GCP_PROJECT_ID: foobar
    PROJECT_NAME: osrm-server-car
    IMAGE_NAME: gcr.io/$GCP_PROJECT_ID/$PROJECT_NAME

"Build Docker Image":
    stage: build
    script:
       - mkdir -p /etc/builder
       - cat $GCR_SERVICE_ACCOUNT | base64 -d > /etc/builder/sa.json
       - docker login -u _json_key -p "$(cat /etc/builder/sa.json)" https://gcr.io
       - docker pull $IMAGE_NAME:latest || true
       - docker build --cache-from $IMAGE_NAME:latest --tag $IMAGE_NAME:${CI_COMMIT_SHORT_SHA} .
       - docker tag $IMAGE_NAME:${CI_COMMIT_SHORT_SHA} $IMAGE_NAME:latest
       - docker push $IMAGE_NAME:${CI_COMMIT_SHORT_SHA}
       - docker push $IMAGE_NAME:latest

"Deploy to Production":
   extends: .deployment
   stage: production
   variables:
      ENVIRONMENT: prod
      IMAGE_TAG: ${CI_COMMIT_SHORT_SHA}
   only:
      - master

.deployment:
   image: devth/helm:v2.16.1
   script:
      - mkdir -p /etc/deploy
      - cat $GKE_SERVICE_ACCOUNT | base64 -d > /etc/deploy/sa.json
      - gcloud auth activate-service-account --key-file /etc/deploy/sa.json --project $GKE_PROJECT
      - gcloud container clusters get-credentials $GKE_CLUSTER_NAME --zone $GKE_ZONE --project $GKE_PROJECT
      - helm init --client-only --skip-refresh
      - helm upgrade -i $PROJECT_NAME helm/$PROJECT_NAME --namespace osrm --wait --set image.tag=$IMAGE_TAG -f helm/$PROJECT_NAME/values.yaml