docker.yaml

name: build

on:
  workflow_dispatch:
  push:
    tags:
      - '[0-9]+.[0-9]+.[0-9]+'
    paths-ignore:
      - 'docs/**'
      - '*.md'

jobs:
  container:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v2

      - name: Set up Docker buildx
        id: buildx
        uses: docker/setup-buildx-action@v2

      - name: Login to GitHub Container Registry
        uses: docker/login-action@v2
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Decide on tag
        id: tagger
        run: |
          tag=$(echo "${{ github.ref }}" | sed -e 's/^refs\/heads\///g' -e 's/^refs\/tags\///g' -e 's/^refs\/pull\///g' -e 's/\/merge$//g' | sed -e 's/master/latest/g')
          echo "::set-output name=tag::${tag}"
          echo "::debug::docker image tag ${tag}"

      - name: Cache Docker layers
        uses: actions/cache@v3
        id: cache
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-buildx-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-buildx-

      - name: Build and push Docker image
        id: build-push
        uses: docker/build-push-action@v3
        with:
          build-args: VERSION=${{ steps.tagger.outputs.tag }}
          platforms: linux/amd64,linux/arm64
          cache-from: type=local,src=/tmp/.buildx-cache
          cache-to: type=local,dest=/tmp/.buildx-cache
          tags: |
            ghcr.io/${{ github.repository }}:${{ steps.tagger.outputs.tag }}
            ghcr.io/${{ github.repository }}:latest
          push: true

      - name: Image digest
        run: echo "${{ steps.build-push.outputs.digest }}"