release.yml

name: Release

on:
  workflow_dispatch:
  push:
    tags:
      - debian*

permissions:
  contents: write

env:
  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

  DEBIAN_VERSION: "12"
  DEBIAN_VERNAME: "bookworm"
  DEBIAN_RELEASE: "20240201-1644"
  DEBIAN_VARIANT: "genericcloud-amd64"

jobs:
  # Create a new release based on current tag name
  release:
    name: Create release
    runs-on: ubuntu-latest

    steps:
      - name: Create release draft
        run: |
          gh release create "${GITHUB_REF_NAME}" \
              --repo="${GITHUB_REPOSITORY}" \
              --title="${GITHUB_REF_NAME}" \
              --generate-notes \
              --latest \
              --draft

  # Download Debian base cloud image
  download:
    name: Download image
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - id: cache
        name: Cache image
        uses: actions/cache@v4
        with:
          key: "debian-${{ env.DEBIAN_VERSION }}-${{ env.DEBIAN_VARIANT }}-${{ env.DEBIAN_RELEASE }}"
          path: "*.qcow2"

      - name: Download image
        if: steps.cache.outputs.cache-hit != 'true'
        run: wget "https://cloud.debian.org/images/cloud/$DEBIAN_VERNAME/$DEBIAN_RELEASE/debian-${DEBIAN_VERSION}-${DEBIAN_VARIANT}-${DEBIAN_RELEASE}.qcow2"

      - name: Upload original image artifact
        run: gh release upload "${GITHUB_REF_NAME}" *.qcow2

  # Rebuild images
  rebuild-images:
    name: Rebuild ${{ matrix.variant }} image
    needs: [release, download]
    runs-on: ubuntu-latest
    strategy:
      matrix:
        variant: [qemu, locales, extras]

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Cache image
        uses: actions/cache/restore@v4
        with:
          key: "debian-${{ env.DEBIAN_VERSION }}-${{ env.DEBIAN_VARIANT }}-${{ env.DEBIAN_RELEASE }}"
          path: "*.qcow2"

      - name: Install libguestfs
        run: |
          sudo apt-get update -y
          sudo apt-get install -y libguestfs-tools

      - name: Rebuild image
        run: |
          # Install packages
          declare -A packages
          packages=(
            [qemu]=qemu-guest-agent
            [locales]=qemu-guest-agent,locales-all
            [extras]=qemu-guest-agent,locales-all,htop
          )
          sudo virt-customize -a *.qcow2 \
            --install ${packages[${{ matrix.variant }}]} \
            --run-command "apt-get clean"

      - name: Compress image
        run: |
          # Compress image
          SOURCE_FILE="$(ls *.qcow2)"
          TARGET_FILE="${SOURCE_FILE/genericcloud/${{ matrix.variant }}}"
          sudo virt-sparsify ${SOURCE_FILE} --compress ${TARGET_FILE}
          sudo rm ${SOURCE_FILE}

      - name: Upload custom image artifact
        run: gh release upload "${GITHUB_REF_NAME}" *.qcow2