docker.yml

# NOTE: This name appears in GitHub's Checks API and in workflow's status badge.
name: docker

# NOTE: The purpose of this workflow is only to test if Docker images build
# successfully.
# Oasis recommends using binaries from the official GitHub releases as described
# in repo's docker/README.md.

# Trigger the workflow when:
on:
  # A push occurs to one of the matched branches.
  push:
    # XXX: ideally on master branches we would build the image only if there are changes in the
    # 'docker/' directory (as we do in pull_requests). However, this doesn't work when pushing a new
    # 'stable/*' branch - the build on a new branch does not trigger unless there are changes
    # compared to master on the filtered path.
    # If this is ever fixed, or per branch filters are possible, bring back the path filter to only
    # build the image when there are changes within 'docker/' directory.
    branches:
      - master
      - stable/*
  # Or when a pull request event occurs for a pull request against one of the matched branches and at least
  # one modified file matches the configured paths.
  #
  # NOTE: We use this to be able to easily test Docker image changes.
  pull_request:
    branches:
      - master
      - stable/*
    paths:
      - docker/**
  # Or every day at 04:00 UTC (for the default/master branch).
  schedule:
    - cron: "0 4 * * *"

jobs:

  build-images:
    # NOTE: This name appears in GitHub's Checks API.
    name: build-images
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v3

      - name: Determine branch and tag name
        id: branch_tag
        shell: bash
        run: |
          if [[ -z $GITHUB_BASE_REF ]]; then
            # On master/stable branches.
            branch=${GITHUB_REF_NAME}
            tag=${GITHUB_REF_NAME}
          else
            # On pull request branches.
            branch=${GITHUB_HEAD_REF}
            tag=pr-$(git describe --always --match '' --abbrev=7)
          fi
          tag=${tag//\//-}
          echo "::set-output name=branch::${branch}"
          echo "::set-output name=tag::${tag}"
          echo "::set-output name=created::$(date -u +'%Y-%m-%dT%H:%M:%SZ')"

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

      - name: "Rebuild oasisprotocol/oasis-rosetta-gateway:${{ steps.branch_tag.outputs.tag }}"
        uses: docker/build-push-action@v4.1.1
        with:
          context: docker
          file: docker/Dockerfile
          build-args: |
            GATEWAY_BRANCH=${{ steps.branch_tag.outputs.branch }}
          tags: oasisprotocol/oasis-rosetta-gateway:${{ steps.branch_tag.outputs.tag }}
          pull: true
          labels: |
            org.opencontainers.image.source=${{ github.event.repository.html_url }}
            org.opencontainers.image.created=${{ steps.branch_tag.outputs.created }}
            org.opencontainers.image.revision=${{ github.sha }}