cometbft-docker.yml

name: Docker
# Build & Push rebuilds the CometBFT docker image on every push to main and creation of tags
# and pushes the image to https://hub.docker.com/r/cometbft/cometbft
on:
  push:
    branches:
      - main
    tags:
      - "v[0-9]+.[0-9]+.[0-9]+"               # Push events to matching v*, i.e. v1.0, v20.15.10
      - "v[0-9]+.[0-9]+.[0-9]+-alpha.[0-9]+"  # e.g. v0.37.0-alpha.1, v0.38.0-alpha.10
      - "v[0-9]+.[0-9]+.[0-9]+-beta.[0-9]+"   # e.g. v0.37.0-beta.1, v0.38.0-beta.10
      - "v[0-9]+.[0-9]+.[0-9]+-rc[0-9]+"      # e.g. v0.37.0-rc1, v0.38.0-rc10

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Prepare
        id: prep
        run: |
          DOCKER_IMAGE=cometbft/cometbft
          VERSION=noop
          if [[ $GITHUB_REF == refs/tags/* ]]; then
            VERSION=${GITHUB_REF#refs/tags/}
          elif [[ $GITHUB_REF == refs/heads/* ]]; then
            VERSION=$(echo ${GITHUB_REF#refs/heads/} | sed -r 's#/+#-#g')
            if [ "${{ github.event.repository.default_branch }}" = "$VERSION" ]; then
              VERSION=latest
            fi
          fi
          TAGS="${DOCKER_IMAGE}:${VERSION}"
          if [[ $VERSION =~ ^v[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
            TAGS="$TAGS,${DOCKER_IMAGE}:${VERSION}"
          fi
          echo "tags=${TAGS}" >> $GITHUB_OUTPUT

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

      - name: Set up Docker Build
        uses: docker/setup-buildx-action@v3.4.0

      - name: Login to DockerHub
        if: ${{ github.event_name != 'pull_request' }}
        uses: docker/login-action@v3.2.0
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Publish to Docker Hub
        uses: docker/build-push-action@v6.3.0
        with:
          context: .
          file: ./DOCKER/Dockerfile
          platforms: linux/amd64,linux/arm64
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.prep.outputs.tags }}