oci.yml

# Stage Docker images through GitHub Actions (GHA) to GitHub Container Registry (GHCR).
#
# Derived from:
# https://github.com/docker/build-push-action/blob/master/docs/advanced/tags-labels.md
# https://github.com/crazy-max/ghaction-docker-meta
# https://github.com/docker/build-push-action
# https://github.com/MarcelCoding/luna/blob/main/.github/workflows/ci.yaml
name: OCI

on:
  pull_request:
    branches: [ main ]
  push:
    tags:
      - '*.*.*'

  # Allow job to be triggered manually.
  workflow_dispatch:

  # Build nightlies.
  schedule:
    - cron: '0 5 * * *'

env:
  GHCR_IMAGE_NAME: crate/cratedb-prometheus-adapter

jobs:
  docker:
    runs-on: ubuntu-latest
    steps:
      -
        name: Checkout
        uses: actions/checkout@v4
      -
        name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          # list of Docker images to use as base name for tags
          images: |
            ghcr.io/${{ env.GHCR_IMAGE_NAME }}
          # generate Docker tags based on the following events/attributes
          tags: |
            type=schedule,pattern=nightly
            type=ref,event=tag
      -
        name: Inspect meta
        run: |
          echo "Tags:      ${{ steps.meta.outputs.tags }}"
          echo "Labels:    ${{ steps.meta.outputs.labels }}"
      -
        name: Set up QEMU
        uses: docker/setup-qemu-action@v3
        if: matrix.platforms != 'linux/amd64'
      -
        name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
      -
        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: Inspect builder
        run: |
          echo "Name:      ${{ steps.buildx.outputs.name }}"
          echo "Endpoint:  ${{ steps.buildx.outputs.endpoint }}"
          echo "Status:    ${{ steps.buildx.outputs.status }}"
          echo "Flags:     ${{ steps.buildx.outputs.flags }}"
          echo "Platforms: ${{ steps.buildx.outputs.platforms }}"
      -
        name: Login to GHCR
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ github.token }}
      -
        name: Build and push
        uses: docker/build-push-action@v6
        with:
          context: .
          platforms: linux/amd64,linux/arm64,linux/arm/v7
          push: ${{ github.event_name != 'pull_request' && github.event_name != 'workflow_dispatch' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=local,src=/tmp/.buildx-cache
          cache-to: type=local,dest=/tmp/.buildx-cache-new

      -
        name: Move cache
        run: |
          rm -rf /tmp/.buildx-cache
          mv /tmp/.buildx-cache-new /tmp/.buildx-cache