docker.yaml

name: DockerHub

on:
  workflow_dispatch:
  # push:
  #   branches:
  #     - main
  #   paths:
  #     - apps/relay/package.json
  #     - .github/workflows/docker.yaml

env:
  REGISTRY: docker.io
  IMAGE_NAME: evoluhq/relay

jobs:
  push_to_registry:
    name: Push Docker image to Docker Hub
    runs-on: ubuntu-latest
    permissions:
      packages: write
      contents: read
      attestations: write
      id-token: write
    steps:
      - name: Check out the repo
        uses: actions/checkout@v4

      - name: Check if version already published
        id: version
        shell: bash
        run: |
          set -euo pipefail
          version=$(jq -r .version apps/relay/package.json)

          # Check if this version already exists in Docker Hub
          if docker manifest inspect docker.io/evoluhq/relay:$version >/dev/null 2>&1; then
            echo "Version $version already published"
            changed="false"
          else
            echo "Version $version not yet published"
            changed="true"
          fi

          echo "new=$version" >> "$GITHUB_OUTPUT"
          echo "changed=$changed" >> "$GITHUB_OUTPUT"

      - name: Set up QEMU
        if: ${{ steps.version.outputs.changed == 'true' }}
        uses: docker/setup-qemu-action@49b3bc8e6bdd4a60e6116a5414239cba5943d3cf # v3.2.0

      - name: Set up Docker Buildx
        if: ${{ steps.version.outputs.changed == 'true' }}
        uses: docker/setup-buildx-action@988b5a0280414f521da3d829df8432753fbd92d2 # v3.6.1

      - name: Log in to Docker Hub
        if: ${{ github.repository == 'evoluhq/evolu' && steps.version.outputs.changed == 'true' }}
        uses: docker/login-action@9780b0c442fbb1117ed29e0efdff1e18412f7567 # v3.3.0
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Extract metadata (tags, labels) for Docker
        if: ${{ steps.version.outputs.changed == 'true' }}
        id: meta
        uses: docker/metadata-action@8e5442c4ef9f78752691e2d8f8d19755c6f78e81 # v5.5.1
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          flavor: |
            latest=true
          tags: |
            # Always push the full (possibly prerelease) version tag
            type=semver,pattern={{version}},value=${{ steps.version.outputs.new }}
            # Only push major.minor for stable (no hyphen)
            type=semver,pattern={{major}}.{{minor}},value=${{ steps.version.outputs.new }},enable=${{ !contains(steps.version.outputs.new, '-') }}

      - name: Build and push Docker image
        if: ${{ github.repository == 'evoluhq/evolu' && steps.version.outputs.changed == 'true' }}
        id: push
        uses: docker/build-push-action@32945a339266b759abcbdc89316bb68de327d74b # v6.7.0
        with:
          platforms: linux/amd64,linux/arm64
          context: .
          file: ./apps/relay/Dockerfile
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: |
            type=gha,scope=relay/${{ github.ref_name }}
          cache-to: |
            type=gha,scope=relay/${{ github.ref_name }},mode=min
          provenance: true
          sbom: true

      - name: Generate artifact attestation
        if: ${{ github.repository == 'evoluhq/evolu' && steps.version.outputs.changed == 'true' }}
        uses: actions/attest-build-provenance@897ed5eab10ec6095258600c7e5e2195f007b46d # v1.4.1
        with:
          subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          subject-digest: ${{ steps.push.outputs.digest }}
          push-to-registry: true

      - name: Publish summary (tags and digest)
        if: ${{ github.repository == 'evoluhq/evolu' && steps.version.outputs.changed == 'true' }}
        shell: bash
        run: |
          {
            echo '### Docker Image'
            echo ''
            echo '**Tags:**'
            echo '${{ steps.meta.outputs.tags }}' | sed 's/^/- /'
            echo ''
            echo '**Digest:**'
            echo '\`${{ steps.push.outputs.digest }}\`'
            echo ''
            echo '#### Deploy by digest'
            echo ''
            echo '```bash'
            echo 'docker pull docker.io/evoluhq/relay@${{ steps.push.outputs.digest }}'
            echo 'docker run --rm -p 4000:4000 docker.io/evoluhq/relay@${{ steps.push.outputs.digest }}'
            echo '```'
          } >> "$GITHUB_STEP_SUMMARY"

      - name: Skip build (fork repository)
        if: ${{ steps.version.outputs.changed == 'true' && github.repository != 'evoluhq/evolu' }}
        run: echo "Version changed but repository is a fork; skipping Docker login/push/attestation"

      - name: Skip build (version unchanged)
        if: ${{ steps.version.outputs.changed != 'true' }}
        run: echo "apps/relay/package.json version unchanged; skipping Docker build"