name: Release

on:
  push:
    branches: ["main"]

jobs:
  tag-and-notes:
    runs-on: docker
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Build CI image
        run: docker build -f ci.Dockerfile -t local/ci:latest .

      - name: Compute tag
        id: tag
        run: |
          TZ=UTC date +"v%Y.%m.%d-%H%M" > tag.txt
          echo "tag=$(cat tag.txt)" >> $GITHUB_OUTPUT

      - name: Create annotated tag
        run: |
          git config user.name "ci"
          git config user.email "ci@local"
          git tag -a ${{ steps.tag.outputs.tag }} -m "Release ${{ steps.tag.outputs.tag }}"
          git push origin ${{ steps.tag.outputs.tag }}