concourse-buildkit/ci/pipeline.yml

---
resources:
- name: source
  type: git
  source:
    uri: https://gitea.redxef.at/redxef/concourse-buildkit
    branch: master
    fetch_tags: true
- name: upstream-image
  type: registry-image
  source:
    repository: moby/buildkit

jobs:
- name: build-push
  plan:
  - get: source
    trigger: true
  - get: upstream-image
    trigger: true
  - task: compute-docker-tags
    config:
      platform: linux
      image_resource:
        type: registry-image
        source:
          repository: alpine/git
      inputs:
      - name: source
        path: .
      outputs:
      - name: docker-tags
      run:
        path: sh
        args:
        - -c
        - |
          #!/usr/bin/env sh
          git rev-parse --short HEAD > docker-tags/tags.txt
          git show-ref --tags | \
              sed -n "/$(git rev-parse HEAD)/ s|$(git rev-parse HEAD).refs/tags/||gp" \
              >> docker-tags/tags.txt
  - task: build
    privileged: true
    config:
      platform: linux
      image_resource:
        type: registry-image
        source:
          repository: redxef/concourse-buildkit
      inputs:
      - name: source
        path: .
      - name: docker-tags
      params:
        username: ((docker.username))
        password: ((docker.password))
        repository: docker.io/redxef/concourse-buildkit
        tag: latest
        additional_tags: docker-tags/tags.txt
        push: true
        platform: aarch64,arm,ppc64le,s390x,x86_64
        context: .
        manual: false
      run:
        path: build