sql-splitter/.github/workflows/docker.yml at main · HelgeSverre/sql-splitter · GitHub

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name: Docker

# Builds and publishes the sql-splitter image to Docker Hub and GHCR.
#
# Triggers:
#   - push to a version tag (v*): builds that tag
#   - workflow_dispatch with `tag` input: builds the given ref (used to backfill old releases)
#
# Required secrets:
#   - DOCKERHUB_USERNAME: Docker Hub account (e.g. helgesverre)
#   - DOCKERHUB_TOKEN:    Docker Hub access token with read/write/delete on the repo
#
# GHCR uses the workflow's GITHUB_TOKEN -- no extra secret needed.

on:
  push:
    tags:
      - 'v*'
  pull_request:
    paths:
      - 'Dockerfile'
      - '.dockerignore'
      - '.github/workflows/docker.yml'
      - 'Cargo.toml'
      - 'Cargo.lock'
  workflow_dispatch:
    inputs:
      tag:
        description: 'Git tag to build (e.g. v1.13.5). Required for backfill runs.'
        required: true
        type: string

permissions:
  contents: read
  packages: write

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Resolve ref to build
        id: ref
        run: |
          if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
            echo "ref=${{ inputs.tag }}" >> "$GITHUB_OUTPUT"
          elif [ "${{ github.event_name }}" = "pull_request" ]; then
            # PR validation: build the PR head, don't push
            echo "ref=${{ github.event.pull_request.head.sha }}" >> "$GITHUB_OUTPUT"
          else
            echo "ref=${{ github.ref_name }}" >> "$GITHUB_OUTPUT"
          fi
          if [ "${{ github.event_name }}" = "pull_request" ]; then
            echo "push=false" >> "$GITHUB_OUTPUT"
          else
            echo "push=true" >> "$GITHUB_OUTPUT"
          fi

      - uses: actions/checkout@v4
        with:
          ref: ${{ steps.ref.outputs.ref }}
          fetch-depth: 0

      - name: Overlay Dockerfile from main (backfill runs)
        # Tags published before Docker support was added don't have a Dockerfile.
        # On workflow_dispatch backfills, copy the current Dockerfile + .dockerignore
        # from main on top of the tag's source tree so old releases can still be built.
        if: github.event_name == 'workflow_dispatch'
        run: |
          git fetch origin main --depth=1
          git checkout origin/main -- Dockerfile .dockerignore

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

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

      - name: Log in to Docker Hub
        if: steps.ref.outputs.push == 'true'
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Log in to GHCR
        if: steps.ref.outputs.push == 'true'
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Compute image metadata
        id: meta
        if: steps.ref.outputs.push == 'true'
        uses: docker/metadata-action@v5
        with:
          images: |
            docker.io/${{ secrets.DOCKERHUB_USERNAME }}/sql-splitter
            ghcr.io/${{ github.repository_owner }}/sql-splitter
          # Strip any leading "v" so we get both `v1.13.5` and `1.13.5`, plus partial semver tags.
          # `latest` is applied automatically when the ref is the highest semver tag.
          tags: |
            type=semver,pattern={{version}},value=${{ steps.ref.outputs.ref }}
            type=semver,pattern={{major}}.{{minor}},value=${{ steps.ref.outputs.ref }}
            type=semver,pattern={{major}},value=${{ steps.ref.outputs.ref }}
            type=raw,value=${{ steps.ref.outputs.ref }}

      - name: Build and push
        uses: docker/build-push-action@v6
        with:
          context: .
          # PR validation builds amd64 only to keep CI quick; tag/dispatch publishes multi-arch.
          platforms: ${{ steps.ref.outputs.push == 'true' && 'linux/amd64,linux/arm64' || 'linux/amd64' }}
          push: ${{ steps.ref.outputs.push == 'true' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max