publish-overlays-image.yaml

name: "Publish Overlays Image"
run-name: Publish Overlays Image to ghcr.io

on:
  push:
    branches:
      - main
    paths:
      - overlays/**
  workflow_dispatch:

jobs:
  build:
    name: Publish image
    runs-on: ubuntu-latest
    steps:
      - name: Install Carvel tools
        shell: bash
        run: curl -L https://carvel.dev/install.sh | bash

      - name: Calculate release variables
        shell: bash
        run: |
          REPOSITORY_NAME=${{github.event.repository.name}}
          echo "REPOSITORY_NAME=${REPOSITORY_NAME,,}" >>${GITHUB_ENV}
          echo "REPOSITORY_OWNER=${GITHUB_REPOSITORY_OWNER,,}" >>${GITHUB_ENV}

      - name: Checkout code
        uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: Get short version sha
        id: get_short_sha
        run: |
          echo "short_sha=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT

      - name: Login to ghcr.io
        run: |
          echo ${{secrets.GITHUB_TOKEN}}|docker login ghcr.io -u ${{github.actor}} --password-stdin

      - name: Publish Overlays to GHCR as Imgpkg bundle
        run: |
          imgpkg --debug push \
                 --file ./overlays \
                 --image ghcr.io/${REPOSITORY_OWNER}/${REPOSITORY_NAME}:${REPOSITORY_TAG}
        env:
          REPOSITORY_TAG: ${{ steps.get_short_sha.outputs.short_sha }}

      - name: Install crane
        uses: imjasonh/setup-crane@v0.1

      - name: Create main tag
        run: |
          crane tag ghcr.io/${REPOSITORY_OWNER}/${REPOSITORY_NAME}:${REPOSITORY_TAG} main
        env:
          REPOSITORY_TAG: ${{ steps.get_short_sha.outputs.short_sha }}