deploy.yml

name: Test, Build and Deploy Images

env:
  PROJECT: blueos
  DOCKER: base
  DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
  IMAGE_LIMIT_SIZE_MB: 900
  ARTIFACTS_PATH: /tmp/artifacts
  DIGESTS_PATH: /tmp/digests

on:
  workflow_dispatch:
  pull_request:
  push:
  schedule:
    # Run every 6 days to keep our caches alive
    - cron: '0 0 */6 * *'

jobs:
  build:
    runs-on: ubuntu-22.04

    strategy:
      matrix:
        platform:
          - linux/arm/v7
          - linux/arm64
          - linux/amd64

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Prepare
        id: prepare
        run: |
          echo "DOCKER_IMAGE=${DOCKER_USERNAME:-bluerobotics}/${PROJECT}-${DOCKER}" >> $GITHUB_ENV

          mkdir -p "${ARTIFACTS_PATH}"
          mkdir -p "${DIGESTS_PATH}"

          platform=${{ matrix.platform }}
          echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV

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

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

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

      - name: Cache
        uses: actions/cache@v4
        id: cache
        with:
          path: |
            var-cache-apt
            var-lib-apt
            var-ccache
          key: ${{ env.PLATFORM_PAIR }}-cache-${{ hashFiles('Dockerfile') }}
          restore-keys: ${{ env.PLATFORM_PAIR }}-cache-

      - name: Inject cache into Docker
        uses: reproducible-containers/buildkit-cache-dance@v3
        with:
          cache-map: |
            {
              "var-cache-apt": "/var/cache/apt",
              "var-lib-apt": "/var/lib/apt",
              "var-ccache": "~/.cache"
            }
          skip-extraction: ${{ steps.cache.outputs.cache-hit }}

      - name: Login to DockerHub
        if: success() && github.event_name != 'pull_request'
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Build and push
        id: build
        uses: docker/build-push-action@v5
        with:
          context: .
          file: Dockerfile
          platforms: ${{ matrix.platform }}
          labels: ${{ steps.meta.outputs.labels }}
          push: ${{ github.event_name != 'pull_request' }}
          outputs: type=docker,dest=${{ env.ARTIFACTS_PATH }}/${{ env.PLATFORM_PAIR }}.tar
          tags: ${{ steps.meta.outputs.tags }}
          cache-from: type=gha,scope=${{ env.PLATFORM_PAIR }}
          cache-to: type=gha,scope=${{ env.PLATFORM_PAIR }},mode=max

      - name: Export digest
        run: |
          digest="${{ steps.build.outputs.digest }}"
          touch "${{ env.DIGESTS_PATH }}/${digest#sha256:}"

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

      - name: Upload artifacts
        uses: actions/upload-artifact@v4
        with:
          name: ${{ env.PROJECT }}-${{ env.DOCKER }}-${{ env.PLATFORM_PAIR }}
          path: ${{ env.ARTIFACTS_PATH }}/*.tar
          if-no-files-found: error

      - name: Check size
        run: |
          image_name=$(docker load --input ${{ env.ARTIFACTS_PATH }}/*.tar | awk '{print $3}')

          IMAGE_SIZE_BYTES=$(docker image inspect $image_name --format "{{json .Size}}")
          IMAGE_SIZE_MB=$((IMAGE_SIZE_BYTES / 1024 / 1024))

          echo "Core size is: ${IMAGE_SIZE_MB} MB"
          echo "Core size limit: ${IMAGE_LIMIT_SIZE_MB} MB"
          if [ "$IMAGE_SIZE_MB" -gt "$IMAGE_LIMIT_SIZE_MB" ]; then
            echo "::error::Image size is larger than the limit"
          fi

  merge:
    runs-on: ubuntu-22.04
    needs:
      - build
    steps:
      - name: Download digests
        uses: actions/download-artifact@v4
        with:
          path: ${{ env.DIGESTS_PATH }}
          pattern: digests-*
          merge-multiple: true

      - name: Delete digests
        uses: geekyeggo/delete-artifact@v5
        with:
            name: digests-*
            useGlob: true
            failOnError: false

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

      - name: Prepare
        id: prepare
        run: echo "DOCKER_IMAGE=${DOCKER_USERNAME:-bluerobotics}/${PROJECT}-${DOCKER}" >> $GITHUB_ENV

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

      - name: Login to Docker Hub
        uses: docker/login-action@v3
        if: success() && github.event_name != 'pull_request'
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Create manifest list and push
        if: success() && github.event_name != 'pull_request'
        working-directory: ${{ env.DIGESTS_PATH }}
        run: docker buildx imagetools create $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") $(printf '${{ env.DOCKER_IMAGE }}@sha256:%s ' *)

      - name: Inspect image
        if: always() && github.event_name != 'pull_request'
        run: docker buildx imagetools inspect ${{ env.DOCKER_IMAGE }}:${{ steps.meta.outputs.version }} --format "{{json .}}" | jq