workflow.yaml

on:
  push:
    branches:
      - master
    paths:
      - 'config/**'
      - 'site/**'
      - 'Dockerfile'
      - '.github/workflows/**'

jobs:

  build:
    name: Build, push, and deploy
    runs-on: ubuntu-latest
    steps:

    - name: Checkout master
      uses: actions/checkout@master

    - name: Update SHA
      run: echo $GITHUB_SHA > $GITHUB_WORKSPACE/site/_meta

    - name: Build container image
      run: docker build -t registry.digitalocean.com/asb/static-example:$(echo $GITHUB_SHA | head -c7) .

    - name: Install doctl
      uses: digitalocean/action-doctl@v2
      with:
        token: ${{ secrets.DIGITALOCEAN_ACCESS_TOKEN }}

    - name: Log in to DigitalOcean Container Registry with short-lived credentials
      run: doctl registry login --expiry-seconds 600

    - name: Push image to DigitalOcean Container Registry
      run: docker push registry.digitalocean.com/asb/static-example

    - name: Update deployment file
      run: TAG=$(echo $GITHUB_SHA | head -c7) && sed -i 's|<IMAGE>|registry.digitalocean.com/asb/static-example:'${TAG}'|' $GITHUB_WORKSPACE/config/deployment.yml

    - name: Save DigitalOcean kubeconfig with short-lived credentials
      run: doctl kubernetes cluster kubeconfig save --expiry-seconds 600 actions-example-k8s-1-18

    - name: Deploy to DigitalOcean Kubernetes
      run: kubectl apply -f $GITHUB_WORKSPACE/config/deployment.yml

    - name: Verify deployment
      run: kubectl rollout status deployment/static-example