gke-builder

Google Kubernetes Engine (GKE) image builder is an Alpine Linux based image for building and deploying Docker images from a CI environmnet (such as CircleCI). Based off google/cloud-sdk:alpine.

Contains the following command-line tools:

Usage

gke-builder has been tested with CircleCI 2.0. The following CircleCI configuration shows building a Docker image and pushing it to the Google Container Registry.

This example assumes you have setup the following environment variables:

GOOGLE_AUTH - GCP service account JSON key
GOOGLE_PROJECT_ID - the ID of your GCP project
GOOGLE_COMPUTE_ZONE - which compute zone to use by default, e.g. us-central1-a
GOOGLE_CLUSTER_NAME - the cluster to which deployments will occur
GOOGLE_GCR_HOST - GCR hostname, e.g. us.gcr.io

For more configuration details read the following resources:

Example .circleci/config.yaml config:

version: 2
jobs:
  build:
    docker:
      - image: dtcristo/gke-builder:latest

    working_directory: ~/repo

    steps:
      - checkout
      - setup_remote_docker

      - run:
          name: Authenticate with Google Cloud
          command: |
            echo ${GOOGLE_AUTH} > ${HOME}/gcp-key.json
            gcloud auth activate-service-account --key-file ${HOME}/gcp-key.json
            gcloud --quiet config set project ${GOOGLE_PROJECT_ID}
            gcloud --quiet config set compute/zone ${GOOGLE_COMPUTE_ZONE}
            gcloud --quiet container clusters get-credentials ${GOOGLE_CLUSTER_NAME}

      - run:
          name: Pull latest image
          command: |
            IMAGE=${GOOGLE_GCR_HOST}/${GOOGLE_PROJECT_ID}/${CIRCLE_PROJECT_REPONAME}
            gcloud docker -- pull ${IMAGE}:latest

      - run:
          name: Build image
          command: |
            IMAGE=${GOOGLE_GCR_HOST}/${GOOGLE_PROJECT_ID}/${CIRCLE_PROJECT_REPONAME}
            TAG=$CIRCLE_BUILD_NUM
            docker build \
              --cache-from=${IMAGE}:latest \
              -t ${IMAGE}:${TAG} \
              -t ${IMAGE}:latest \
              .

      - run:
          name: Push image
          command: |
            IMAGE=${GOOGLE_GCR_HOST}/${GOOGLE_PROJECT_ID}/${CIRCLE_PROJECT_REPONAME}
            gcloud docker -- push ${IMAGE}