Unity game build, archive and deployment to itch.io automation (Windows, Linux, MacOS)

activation.yml

name: Acquire activation file
on:
  workflow_dispatch: {}
jobs:
  activation:
    name: Request manual activation file 🔑
    runs-on: ubuntu-latest
    steps:
      # Request manual activation file
      - name: Request manual activation file
        id: getManualLicenseFile
        uses: game-ci/unity-request-activation-file@v2
      # Upload artifact (Unity_v20XX.X.XXXX.alf)
      - name: Expose as artifact
        uses: actions/upload-artifact@v2
        with:
          name: ${{ steps.getManualLicenseFile.outputs.filePath }}
          path: ${{ steps.getManualLicenseFile.outputs.filePath }}

main.yml

name: Build all platforms

on:
  # Enable manual trigger
  workflow_dispatch:
    inputs:
      itch_deployment:
        description: 'Deploy to itch.io (y/n)'
        default: n
      itch_suffix:
        description: '(Optional) itch.io channel suffix'
        default: dev

jobs:
  buildMultiPlatform:
    name: Build ${{ matrix.targetMetadata[0] }}
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        # [ Unity Target ID, itch.io channel base name ]
        targetMetadata:
          - [ StandaloneOSX,       osx   ] # Build a macOS standalone (Intel 64-bit).
          - [ StandaloneWindows64, win   ] # Build a Windows 64-bit standalone.
          - [ StandaloneLinux64,   linux ] # Build a Linux 64-bit standalone.
    steps:
      # Checkout
      - name: Checkout repository
        uses: actions/checkout@v2
        with:
          lfs: true

      # Cache Unity generated files
      - name: Cache Unity Generated files
        id: cache-unity-library
        uses: actions/cache@v2
        with:
          path: Library
          key: Library-${{ matrix.targetMetadata[0] }}
          restore-keys: |
            Library-

      # Build
      - name: Build project
        uses: game-ci/unity-builder@v2
        env:
          UNITY_LICENSE: ${{ secrets.UNITY_LICENSE }}
        with:
          targetPlatform: ${{ matrix.targetMetadata[0] }}
          allowDirtyBuild: true

      # Store Outputs
      # - name: Store Build
      #   uses: actions/upload-artifact@v2
      #   with:
      #     name: MyCustomGameName-${{ matrix.targetMetadata[0] }}-${{ github.run_id }}-${{ github.sha }}
      #     path: build/${{ matrix.targetMetadata[0] }}/*
      #     retention-days: 5

      # Upload to itch.io using butler
      - name: Butler Push to itch.io
        if: ${{ github.event.inputs.itch_deployment == 'y' }}
        uses: josephbmanley/butler-publish-itchio-action@v1.0.2
        env:
          BUTLER_CREDENTIALS: ${{ secrets.BUTLER_CREDENTIALS }}
          CHANNEL: ${{ matrix.targetMetadata[1] }}-${{ github.event.inputs.itch_suffix }} # e.g. osx-dev
          ITCH_GAME: REPLACE_WITH_YOUR_OWN
          ITCH_USER: REPLACE_WITH_YOUR_OWN
          PACKAGE: build/${{ matrix.targetMetadata[0] }}/