pages.yml

name: Build and Deploy
on: [push]
env:
  #variables related with the repository
  REPOSITORY_MAIN_BRANCH: "master"
  #variables related with the docker imager registry
  DOCKER_IMAGE_REPOSITORY: ikcap
  DOCKER_IMAGE_NAME: disk-website 
  #variables related with the continuous delivery
  MANIFEST_REPOSITORY: KnowledgeCaptureAndDiscovery/k8s
  MANIFEST_REPOSITORY_BRANCH: master
  MANIFEST_REPOSITORY_PATH: disk-server/disk/website
  KUSTOMIZE_IMAGE_NAME: website
permissions:
  contents: write
jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout 🛎️
        uses: actions/checkout@v3

      - name: Create value as an environment variable
        run: |
          echo "DOCKER_TAG=${GITHUB_SHA}" >> $GITHUB_ENV
      - name: Expose value
        id: exposeValue
        run: |
          echo "::set-output name=docker_tag::${{ env.DOCKER_TAG }}"
      - name: Login to DockerHub
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Build and push Docker image
        uses: docker/build-push-action@v3.0.0
        if: github.event_name != 'pull_request'
        with:
          push: true
          context: .
          tags: ${{ secrets.DOCKERHUB_USERNAME }}/${{ env.DOCKER_IMAGE_NAME }}:${{ env.DOCKER_TAG }},${{ secrets.DOCKERHUB_USERNAME }}/${{ env.DOCKER_IMAGE_NAME }}:latest
          file: ${{ env.DOCKER_FILE}}
    outputs:
      docker_tag: ${{ steps.exposeValue.outputs.docker_tag }}

  update:
    # This job the container running on k8s cluster
    needs: [build]
    name: "Deploy the app"
    if: github.event_name != 'pull_request' && github.ref == format('refs/heads/{0}', github.event.repository.default_branch)
    runs-on: ubuntu-latest
    steps:
      - name: Check out k8s manifests
        uses: actions/checkout@v3
        if: github.event_name != 'pull_request'
        with:
          repository: ${{ env.MANIFEST_REPOSITORY }}
          ref: ${{ env.MANIFEST_REPOSITORY_BRANCH }}
          ssh-key: ${{ secrets.BOT_SSH }}
          persist-credentials: true

      - name: Setup Kustomize
        uses: imranismail/setup-kustomize@v1
        if: github.event_name != 'pull_request'
        with:
          kustomize-version: "3.6.1"

      - name: Update Kubernetes resources
        if: github.event_name != 'pull_request'
        run: |
          cd ${{ env.MANIFEST_REPOSITORY_PATH }}
          kustomize edit set image ${{ env.KUSTOMIZE_IMAGE_NAME }}=${{ secrets.DOCKERHUB_USERNAME }}/${{ env.DOCKER_IMAGE_NAME }}:${{ needs.build.outputs.docker_tag }}
          cat kustomization.yaml

      - name: Commit files
        if: github.event_name != 'pull_request'
        run: |
          git config --local user.email "action@github.com"
          git config --local user.name "GitHub Action"
          git commit -am "Disk web updated"

      - name: Push changes
        if: github.event_name != 'pull_request'
        uses: ad-m/github-push-action@master
        with:
          ssh: true
          branch: ${{ env.MANIFEST_REPOSITORY_BRANCH }}
          repository: ${{ env.MANIFEST_REPOSITORY }}