build.yaml

name: Build Image
on:
  workflow_dispatch:
  push:
concurrency: build-image
env:
  REGISTRY: ghcr.io/
  IMAGE: ${{ github.repository }}
  TAG: ${{ github.sha }}
jobs:
  build_deploy_cached:
    runs-on: ubuntu-latest
    name: Build and Deploy with Cache
    steps:
      - id: registry
        uses: ASzc/change-string-case-action@v1
        with:
          string: ${{ env.REGISTRY }}

      - id: image
        uses: ASzc/change-string-case-action@v1
        with:
          string: ${{ env.IMAGE }}

      - id: tag
        uses: ASzc/change-string-case-action@v1
        with:
          string: ${{ env.TAG }}

      - name: Wait for tagging to succeed
        uses: lewagon/wait-on-check-action@v1.3.3
        with:
          ref: ${{ github.ref }}
          check-name: "Tag revision"
          repo-token: ${{ secrets.GITHUB_TOKEN }}
          wait-interval: 10

      - name: Checkout Code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          submodules: "recursive"

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
        id: buildx

      - name: Cache Docker layers
        uses: actions/cache@v4
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-buildx-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-buildx

      - name: Login to the Container Registry
        uses: docker/login-action@v2
        with:
          registry: ${{ steps.registry.outputs.lowercase }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v4
        with:
          # context: git
          images: ${{ steps.registry.outputs.lowercase }}${{ steps.image.outputs.lowercase }}
          tags: |
            type=edge,priority=100
            type=sha,priority=200
            type=ref,event=tag,priority=300
            type=raw,priority=150,value=latest,enable={{is_default_branch}}

      # Retrieve all repository tags from the GitHub API using undocumented API call to get all tags
      # https://github.com/actions/github-script
      - name: Get all tags
        id: all-tags
        uses: actions/github-script@v6
        with:
          script: |
            return github.rest.repos.listTags({
              owner: context.repo.owner,
              repo: context.repo.repo,
              per_page: 100
            })

      # Prepare JSON output for Unix command line
      # https://github.com/mad9000/actions-find-and-replace-string
      - name: Format jq result
        id: formatted-jq
        uses: mad9000/actions-find-and-replace-string@2
        with:
          source: ${{ steps.all-tags.outputs.result }}
          find: "'"
          replace: "\\'"

      # Parse Github API output and search for tags only matching the current commit SHA
      - name: Search all tags for commit
        id: tag-results
        run: |
          tags=$( echo '${{ steps.formatted-jq.outputs.value }}' | jq -r ".data | .[] | select( .commit.sha == \"${{ github.sha }}\" ) | .name" | tr '\n' ' ' )
          echo "tags=${tags}" >> $GITHUB_OUTPUT

      # Merge the tag lists from docker/metadata-action and GitHub API
      - name: Build tag list
        id: tag-list
        run: |
          echo ::set-output name=tags::"$(
            echo -n "${{ steps.meta.outputs.tags }}" | tr '\n' ','
            for r in `echo "${{ steps.tag-results.outputs.tags }}" | tr '\n' ' '`; do echo -n ,${{ steps.registry.outputs.lowercase }}${{ steps.image.outputs.lowercase }}:$r | tr '[:upper:]' '[:lower:]'; done
          )"

      - name: Build Image
        uses: docker/build-push-action@v5
        with:
          context: .
          builder: ${{ steps.buildx.outputs.name }}
          push: true
          tags: ${{ steps.tag-list.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          build-args: |
            BUILDTIME=${{ fromJSON(steps.meta.outputs.json).labels['org.opencontainers.image.created'] }}
            VERSION=${{ fromJSON(steps.meta.outputs.json).labels['org.opencontainers.image.version'] }}
            REVISION=${{ fromJSON(steps.meta.outputs.json).labels['org.opencontainers.image.revision'] }}
          cache-from: type=local,src=/tmp/.buildx-cache
          cache-to: type=local,dest=/tmp/.buildx-cache-new

      # Temp fix
      # https://github.com/docker/build-push-action/issues/252
      # https://github.com/moby/buildkit/issues/1896
      - name: Move cache
        run: |
          rm -rf /tmp/.buildx-cache
          mv /tmp/.buildx-cache-new /tmp/.buildx-cache