docker.yaml

name: Docker

on:
  push:
    branches:
      - master
    tags:
      - "[0-9]+.[0-9]+.[0-9]+"
      - "[0-9]+.[0-9]+.[0-9]+-dev.[0-9]+"
  pull_request:

jobs:
  docker:
    name: Docker
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v2
        with:
          # Required for correctly populating ldflags
          fetch-depth: 0

      - name: Calculate Docker image tags
        id: tags
        env:
          DOCKER_IMAGES: "ghcr.io/${{ github.repository }}"
        run: |
          case $GITHUB_REF in
            refs/tags/*)  VERSION=${GITHUB_REF#refs/tags/};;
            refs/heads/*) VERSION=$(echo ${GITHUB_REF#refs/heads/} | sed -r 's#/+#-#g');;
            refs/pull/*)  VERSION=pr-${{ github.event.number }};;
            *)            VERSION=sha-${GITHUB_SHA::8};;
          esac

          TAGS=()
          for image in $DOCKER_IMAGES; do
            TAGS+=("${image}:${VERSION}")

            if [[ "${{ github.event.repository.default_branch }}" == "$VERSION" ]]; then
              TAGS+=("${image}:latest")
            fi
          done

          echo "version=${VERSION}" >> $GITHUB_OUTPUT
          IFS=, ; echo "tags=${TAGS[*]}" >> $GITHUB_OUTPUT
          echo "commit_hash=${GITHUB_SHA::8}" >> $GITHUB_OUTPUT
          echo "build_date=$(git show -s --format=%cI)" >> $GITHUB_OUTPUT

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1

      - name: Login to GitHub Container Registry
        uses: docker/login-action@v1
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ github.token }}
        if: github.event_name == 'push'

      - name: Build and push
        uses: docker/build-push-action@v2
        with:
          push: ${{ github.event_name == 'push' }}
          tags: ${{ steps.tags.outputs.tags }}
          context: .
          build-args: |
            VERSION=${{ steps.tags.outputs.version }}
            COMMIT_HASH=${{ steps.tags.outputs.commit_hash }}
            BUILD_DATE=${{ steps.tags.outputs.build_date }}
          labels: |
            org.opencontainers.image.title=${{ github.event.repository.name }}
            org.opencontainers.image.description=${{ github.event.repository.description }}
            org.opencontainers.image.url=${{ github.event.repository.html_url }}
            org.opencontainers.image.source=${{ github.event.repository.clone_url }}
            org.opencontainers.image.version=${{ steps.tags.outputs.version }}
            org.opencontainers.image.created=${{ steps.tags.outputs.build_date }}
            org.opencontainers.image.revision=${{ github.sha }}
            org.opencontainers.image.licenses=${{ github.event.repository.license.spdx_id }}
            org.opencontainers.image.vendor=Banzai Cloud
            org.opencontainers.image.documentation=https://banzaicloud.com/docs/pipeline/overview/