push-buildpackage.yml

name: Push Buildpackage

on:
  release:
    types:
    - published

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  push:
    name: Push
    runs-on: ubuntu-22.04
    steps:

    - name: Parse Event
      id: event
      run: |
        FULL_VERSION="$(jq -r '.release.tag_name' "${GITHUB_EVENT_PATH}" | sed s/^v//)"
        MINOR_VERSION="$(echo "${FULL_VERSION}" | awk -F '.' '{print $1 "." $2 }')"
        MAJOR_VERSION="$(echo "${FULL_VERSION}" | awk -F '.' '{print $1 }')"
        echo "tag_full=${FULL_VERSION}" >> "$GITHUB_OUTPUT"
        echo "tag_minor=${MINOR_VERSION}" >> "$GITHUB_OUTPUT"
        echo "tag_major=${MAJOR_VERSION}" >> "$GITHUB_OUTPUT"
        echo "download_url=$(jq -r '.release.assets[] | select(.name | endswith(".cnb")) | .url' "${GITHUB_EVENT_PATH}")" >> "$GITHUB_OUTPUT"

    - name: Download
      id: download
      uses: paketo-buildpacks/github-config/actions/release/download-asset@main
      with:
        url: ${{ steps.event.outputs.download_url }}
        output: "/github/workspace/buildpackage.cnb"
        token: ${{ secrets.NINE_BOT_GITHUB_TOKEN }}

    - name: Validate version
      run: |
        buidpackTomlVersion=$(sudo skopeo inspect "oci-archive:${GITHUB_WORKSPACE}/buildpackage.cnb" | jq -r '.Labels."io.buildpacks.buildpackage.metadata" | fromjson | .version')
        githubReleaseVersion="${{ steps.event.outputs.tag_full }}"
        if [[ "$buidpackTomlVersion" != "$githubReleaseVersion" ]]; then
          echo "Version in buildpack.toml ($buidpackTomlVersion) and github release ($githubReleaseVersion) are not identical"
          exit 1
        fi

    - name: Push to GHCR
      run: |
        sudo skopeo login --username ${{ github.actor }} --password "${{ secrets.GITHUB_TOKEN }}" "${{ env.REGISTRY }}"
        sudo skopeo copy "oci-archive:${GITHUB_WORKSPACE}/buildpackage.cnb" "docker://${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.event.outputs.tag_full }}"
        sudo skopeo copy "oci-archive:${GITHUB_WORKSPACE}/buildpackage.cnb" "docker://${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.event.outputs.tag_minor }}"
        sudo skopeo copy "oci-archive:${GITHUB_WORKSPACE}/buildpackage.cnb" "docker://${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.event.outputs.tag_major }}"
        sudo skopeo copy "oci-archive:${GITHUB_WORKSPACE}/buildpackage.cnb" "docker://${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest"