publish-image.yml

---
name: Publish Docker image
on:
  push:
    branches:
      - '**'
    tags:
      - 'v*.*.*'
  pull_request:
jobs:
  push_to_registry:
    name: Push Docker image to GitHub Packages
    runs-on: ubuntu-latest
    steps:

      - uses: rlespinasse/github-slug-action@v3.x

      - name: Setup Buildx
        uses: docker/setup-buildx-action@v1
        with:
          install: true

      - name: Cache Docker layers
        uses: actions/cache@v2
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-buildx-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-buildx-

      - name: Login
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v1
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.CR_PAT }}

      - name: Publish
        uses: docker/build-push-action@v2
        with:
          push: ${{ github.event_name != 'pull_request' }}
          platforms: linux/amd64
          cache-from: type=local,src=/tmp/.buildx-cache
          cache-to: type=local,dest=/tmp/.buildx-cache,mode=max
          tags: |
            ghcr.io/rakutentech/plantuml:${{ env.GITHUB_REF_SLUG }}
            ghcr.io/rakutentech/plantuml:${{ env.GITHUB_SHA_SHORT }}
          secrets: |
            GIT_AUTH_TOKEN=${{ github.token }}