build-deploy.yaml

name: Build & Deploy

on:
  workflow_call:
    inputs:
      sha-tag:
        description: "A short-form SHA tag for the commit that triggered this workflow"
        required: true
        type: string


jobs:
  build:
    name: Build Docker Image
    runs-on: ubuntu-latest

    steps:

      - name: Checkout code
        uses: actions/checkout@v4

      # The current version (v3) of Docker's build-push action uses
      # buildx, which comes with BuildKit features that help us speed
      # up our builds using additional cache features. Buildx also
      # has a lot of other features that are not as relevant to us.
      #
      # See https://github.com/docker/build-push-action
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Login to Github Container Registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      # Build the container, including an inline cache manifest to
      # allow us to use the registry as a cache source.
      - name: Build and push
        uses: docker/build-push-action@v6
        with:
          context: .
          file: ./Dockerfile
          push: true
          cache-from: type=registry,ref=ghcr.io/python-discord/site:latest
          cache-to: type=inline
          tags: |
            ghcr.io/python-discord/site:latest
            ghcr.io/python-discord/site:${{ inputs.sha-tag }}
          build-args: |
            git_sha=${{ github.sha }}

  deploy:
    name: Deploy
    needs: build
    runs-on: ubuntu-latest
    environment: production

    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          repository: python-discord/infra
          path: infra

      - uses: azure/setup-kubectl@v4.0.0

      - name: Authenticate with Kubernetes
        uses: azure/k8s-set-context@v4
        with:
          method: kubeconfig
          kubeconfig: ${{ secrets.KUBECONFIG }}

      - name: Deploy to Kubernetes
        uses: Azure/k8s-deploy@v5
        with:
          namespace: web
          manifests: |
            infra/kubernetes/namespaces/web/site/deployment.yaml
          images: 'ghcr.io/python-discord/site:${{ inputs.sha-tag }}'

      - name: Purge Cloudflare Edge Cache
        uses: jakejarvis/cloudflare-purge-action@master
        env:
          CLOUDFLARE_ZONE: 989c984a358bfcd1e9b9d188cc86c1df
          CLOUDFLARE_TOKEN: ${{ secrets.CLOUDFLARE_CACHE_TOKEN }}