circle.yml

# required environment variables
# $CLIENT_SECRET = Google Cloud secret json file in base64 format
# $NPM_TOKEN = npm token for private packages
machine:
  pre:
    # Update docker (default one doesn't support --build-arg for private npm)
    - curl -sSL https://s3.amazonaws.com/circle-downloads/install-circleci-docker.sh | bash -s -- 1.10.0
  node:
    version: 4.4.5
  services:
    - docker

test:
  pre:
    - npm install
  override:
    - npm run lint
    - npm test

deployment:
  staging:
    branch: master
    commands:
      # Auth gcloud
      - echo $CLIENT_SECRET | base64 --decode > ${HOME}/client-secret.json
      - gcloud auth activate-service-account --key-file ${HOME}/client-secret.json
      # Build and push docker image
      - docker build --build-arg NPM_TOKEN=${NPM_TOKEN} -t gcr.io/my-project/foo-service:$(git rev-parse --short HEAD) .
      - gcloud docker push gcr.io/my-project/foo-service:$(git rev-parse --short HEAD)
      # Init kubectl, sudo is required :/
      - sudo /opt/google-cloud-sdk/bin/gcloud --quiet components update kubectl
      - sudo /opt/google-cloud-sdk/bin/gcloud config set compute/zone europe-west1-c
      - sudo /opt/google-cloud-sdk/bin/gcloud config set project my-project
      - sudo /opt/google-cloud-sdk/bin/gcloud container clusters get-credentials trace
      # Update deployment's image
      # for latest Kubernetes only - sudo /opt/google-cloud-sdk/bin/kubectl --namespace=staging set image deployment/subscription --container=subscription --image=gcr.io/my-project/foo-service:$(git rev-parse --short HEAD)
      - path_str=$(echo '{"spec":{"template":{"spec":{"containers":[{"name":"foo","image":"gcr.io/my-project/foo-service:TAG_NAME"}]}}}}' | sed -e "s/TAG_NAME/$(git rev-parse --short HEAD)/g"); sudo /opt/google-cloud-sdk/bin/kubectl --namespace=staging patch deployment foo -p $path_str --record