build.yml

name: Docker

on:
  push:
    tags: ["*"]
    branches:
      - "main"
      - "master"
  schedule:
    - cron: '0 5 * * 0'
  pull_request:
    branches: ["**"]

env:
  # Hostname of your registry
  REGISTRY: docker.io
  # Image repository, without hostname and tag
  IMAGE_NAME: alpine/terragrunt
  SHA: ${{ github.event.pull_request.head.sha || github.event.after }}

jobs:
  build:
    runs-on: ubuntu-latest
    permissions:
      pull-requests: write
    steps:
      - name: Setup Docker buildx
        uses: docker/setup-buildx-action@v3

      # Step to fetch the latest curl version
      - name: Get latest tool versions
        id: curl-version
        run: |
          # export CURL_OPTIONS="-sL -H \"Authorization: token ${{ secrets.API_KEY }}\""

          curl -H "Cache-Control: no-cache" -sL "https://raw.githubusercontent.com/alpine-docker/multi-arch-docker-images/stable/functions.sh" -o functions.sh
          # curl -H "Cache-Control: no-cache" -sL "https://raw.githubusercontent.com/alpine-docker/multi-arch-docker-images/refs/heads/master/functions.sh" -o functions.sh 
          source functions.sh

          # get latest version
          terraform_repo="hashicorp/terraform"
          terragrunt_repo="gruntwork-io/terragrunt"
          boilerplate_repo="gruntwork-io/boilerplate"
          latest_terraform=$(get_latest_release "${terraform_repo}")
          latest_terragrunt=$(get_latest_release "${terragrunt_repo}")
          latest_boilerplate=$(get_latest_release "${boilerplate_repo}")
          echo "Latest terraform release is: ${latest_terraform}"
          echo "Latest terragrunt release is: ${latest_terragrunt}"
          echo "Latest boilerplate release is: ${latest_boilerplate}"
          echo "TERRAFORM=${latest_terraform}" >> $GITHUB_ENV
          echo "TERRAGRUNT=${latest_terragrunt}" >> $GITHUB_ENV
          echo "BOILERPLATE=${latest_boilerplate}" >> $GITHUB_ENV

      # Authenticate to the container registry
      - name: Authenticate to registry ${{ env.REGISTRY }}
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      # Extract metadata (tags, labels) for Docker
      - name: Extract Docker metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          labels: |
            org.opencontainers.image.revision=${{ env.SHA }}
          tags: |
            type=edge,branch=$repo.default_branch
            type=semver,pattern=v{{version}}
            type=sha,prefix=,suffix=,format=short

      # Build and push Docker image with Buildx
      # (don't push on PR, load instead)
      - name: Build and push Docker image
        id: build-and-push
        uses: docker/build-push-action@v6
        with:
          platforms: linux/amd64,linux/arm64
          sbom: ${{ github.event_name != 'pull_request' }}
          provenance: ${{ github.event_name != 'pull_request' }}
          push: ${{ github.event_name != 'pull_request' }}
          load: ${{ github.event_name == 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max
          build-args: |
            TERRAFORM=${{ env.TERRAFORM }}
            TERRAGRUNT=${{ env.TERRAGRUNT }}
            BOILERPLATE=${{ env.BOILERPLATE }}

      # - name: Checkout code
      #   uses: actions/checkout@v2

      # - name: check the platform in multi-arch images
      #   run: |
      #     echo ${{ steps.meta.outputs.tags }}
      #     bash ./test.sh ${{ steps.meta.outputs.tags }}

      - name: set tags
        run: |
          # install crane
          curl -LO https://github.com/google/go-containerregistry/releases/download/v0.20.2/go-containerregistry_Linux_x86_64.tar.gz
          tar zxvf go-containerregistry_Linux_x86_64.tar.gz
          chmod +x crane

          export VERSION=($(docker run -i --rm ${{ steps.meta.outputs.tags }} curl --version|awk '$1=$1' |awk -F "[ -]" 'NR==1{print $2}'))
          echo $VERSION
          ./crane auth login -u ${{ secrets.DOCKERHUB_USERNAME }} -p ${{ secrets.DOCKERHUB_TOKEN }} index.docker.io
          ./crane copy ${{ steps.meta.outputs.tags }} ${{ env.IMAGE_NAME }}:latest
          ./crane copy ${{ steps.meta.outputs.tags }} ${{ env.IMAGE_NAME }}:${{ env.TERRAFORM }}
          ./crane copy ${{ steps.meta.outputs.tags }} ${{ env.IMAGE_NAME }}:tf${{ env.TERRAFORM }}
          rm -f /home/runner/.docker/config.json