CI: add pipline for auto release, with ARM supported

[Musicminion]

GitHub now supports arm build, it means we can build x86 and arm images at the same time. We want to use matrix-level build, because we want to save time.

There are always people asking for arm image, maybe they are running overleaf on mac mini or other arm-NAS, I am not sure. But since they need, we should support. Link

Also, don't forget to open a new repo, I don't want to see my main branch filled with all buggy ci commits.

ToDo

• Setup branch for release
• Setup arm build and auto ci

[ayaka-lab]

https://github.com/ayaka-notes/fuck-github-ci

https://docs.docker.com/build/ci/github-actions/multi-platform/

[ayaka-lab]

The main logic is distributed build and merge togather:

name: ci

on:
  push:

env:
  REGISTRY_IMAGE: user/app

jobs:
  build:
    strategy:
      fail-fast: false
      matrix:
        include:
        - platform: linux/amd64
          runner: ubuntu-latest
        - platform: linux/arm64
          runner: ubuntu-24.04-arm
    runs-on: ${{ matrix.runner }}
    steps:
      - name: Prepare
        run: |
          platform=${{ matrix.platform }}
          echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV

      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY_IMAGE }}

      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ vars.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

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

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

      - name: Build and push by digest
        id: build
        uses: docker/build-push-action@v6
        with:
          platforms: ${{ matrix.platform }}
          labels: ${{ steps.meta.outputs.labels }}
          tags: ${{ env.REGISTRY_IMAGE }}
          outputs: type=image,push-by-digest=true,name-canonical=true,push=true

      - name: Export digest
        run: |
          mkdir -p ${{ runner.temp }}/digests
          digest="${{ steps.build.outputs.digest }}"
          touch "${{ runner.temp }}/digests/${digest#sha256:}"

      - name: Upload digest
        uses: actions/upload-artifact@v4
        with:
          name: digests-${{ env.PLATFORM_PAIR }}
          path: ${{ runner.temp }}/digests/*
          if-no-files-found: error
          retention-days: 1

  merge:
    runs-on: ubuntu-latest
    needs:
      - build
    steps:
      - name: Download digests
        uses: actions/download-artifact@v4
        with:
          path: ${{ runner.temp }}/digests
          pattern: digests-*
          merge-multiple: true

      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ vars.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

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

      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY_IMAGE }}
          tags: |
            type=ref,event=branch
            type=ref,event=pr
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}

      - name: Create manifest list and push
        working-directory: ${{ runner.temp }}/digests
        run: |
          docker buildx imagetools create $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
            $(printf '${{ env.REGISTRY_IMAGE }}@sha256:%s ' *)

      - name: Inspect image
        run: |
          docker buildx imagetools inspect ${{ env.REGISTRY_IMAGE }}:${{ steps.meta.outputs.version }}

[Musicminion]

We need to tag each released version with a branch, then we need to checkout the latest release-* branch to publish docker images.

[Musicminion]

A very tricky problem, what about texlive arm and dev arm image?