Hi, I would like to share my GitHub Actions  workflow. I spent a lot of time on it. Hope it will help someone. The major part of the content has been taken from this tutorial. I also added comments to the script so you can easily understand how this all works

*this workflow require a VERSION file to be in your directory. It is just a simple txt file with the project version number typed in it (like)

This Workflow does:

• export Godot project
• create GitHub release with the project files and the version from the version file added to the exported files'names
• export all the files to the Itch.io project page
• drop a notification in your discord chat

In order to run the script you need to fill the variables in the ENV block, add this workflow to the GitHub repository (tutorial) and push some commits to the main branch

Unfortunately, Itch.io do not allow to upload external files so you have to copy that:

# Here is the Github Action name
name: Deploy Game
# Here we tell when this action should be launched
on:
  push:
    branches:
      - main
# Here we declare all variables we will use below
env:
  # Itch variables
  BUTLER_API_KEY: ${{ secrets.BUTLER_API_KEY }}
  ITCH_PROJECT_NAME: "project name from the ith.io page"
  ITCH_USERNAME: "your username"
  # Other
  EXPORT_NAME: "the name of the exported file"
  IS_MAIN: ${{contains(github.ref, 'main')}}
  # Discord variables
  DISCORD_WEBHOOK: ${{secrets.DISCORD_WEBHOOK}}
  ITCH_PROJECT_LINK: "the ithch.io project page link"
# Here are all the steps of the Action
jobs:
  # Here the script uses external machine to export pushed project
  BuildAndPublish:
    name: Checkout Source Code
    runs-on: ubuntu-20.04
    container:
      image: barichello/godot-ci:3.3
    steps:
      - name: Download + Authorize Godot
        uses: actions/checkout@v2.3.4
      - name: Setup templates
        run: |
          mkdir -p ~/.local/share/godot/templates/
          mv /root/.local/share/godot/templates/$GODOT_VERSION.stable ~/.local/share/godot/templates/$GODOT_VERSION.stable
      - name: Export (Windows)
        run: |
          mkdir -p dist/windows/
          godot -v --export "Windows Desktop" "dist/windows/$EXPORT_NAME.exe"
      - name: Export (macOS)
        run: |
          mkdir -p dist/mac/
          godot -v --export "Mac OSX" "dist/mac/$EXPORT_NAME.zip"
      - name: Export (Linux)
        run: |
          mkdir -p dist/linux/
          godot -v --export "Linux/X11" "dist/linux/$EXPORT_NAME.x86_64"
      - name: Add Version Number to Exports # This action requires the VERSION file to be in the directory
        run: |
          cp ./VERSION ./dist/VERSION
      - name: Upload Artifact
        uses: actions/upload-artifact@v2.2.3
        with:
          name: exports
          path: dist
  # Creating Github release
  CreateNewGithubRelease:
      needs: BuildAndPublish
      if: ${{ contains(github.ref, 'main') }}
      runs-on: ubuntu-latest
      steps:
        - name: Checkout Source Code
          uses: actions/checkout@v2
          with:
            fetch-depth: 0
        - name: Download Exports
          uses: actions/download-artifact@v2
          with:
            name: exports
            path: exports
        - name: Zip Exports
          run: zip -r exports.zip exports
        - name: Read Version Number
          id: version_number
          uses: juliangruber/read-file-action@v1
          with:
            path: ./VERSION
        - name: Test Release Variables
          run: |
            echo "Version Number $VERSION_NUMBER"
            echo "Commit Message $COMMIT_MESSAGE"
            echo "Project Name $PROJECT_NAME"
          env:
            VERSION_NUMBER: ${{ steps.version_number.outputs.content }}
            COMMIT_MESSAGE: ${{ github.event.head_commit.message }}
        - name: Create New Release
          uses: actions/create-release@v1
          id: create_release
          env:
            GITHUB_TOKEN: ${{ secrets.INFINITY_GITHUB_TOKEN }}
          with:
            tag_name: ${{ steps.version_number.outputs.content }}
            release_name: Release ${{ steps.version_number.outputs.content }}
            body: ${{ github.event.head_commit.message }}
            draft: false
            prerelease: false
        - name: Upload Exports
          id: upload-release-asset
          uses: actions/upload-release-asset@v1
          env:
            GITHUB_TOKEN: ${{ secrets.INFINITY_GITHUB_TOKEN }}
          with:
            upload_url: ${{ steps.create_release.outputs.upload_url }}
            asset_path: ./exports.zip
            asset_name: exports.zip
            asset_content_type: application/zip
  # Here all the created files being exported to the itch page
  PushExportsToItch:
    needs: BuildAndPublish
    if: ${{ contains(github.ref, 'main') }}
    runs-on: ubuntu-latest
    steps:
      - name: Download Exports
        uses: actions/download-artifact@v2
        with:
          name: exports
          path: dist
      - name: Download + Authorize Butler
        run: |
          curl -L -o butler.zip <a href="https://broth.itch.ovh/butler/linux-amd64/LATEST/archive/default
 ">https://broth.itch.ovh/butler/linux-amd64/LATEST/archive/default
 </a>         unzip butler.zip
          chmod +x butler
          ./butler -V
      - name: Login To Butler
        run: ./butler login
      - name: Push Windows Export To Itch
        # Here the script adds the version in the VERSION file to the file name
        run: ./butler push ./dist/windows/$EXPORT_NAME.exe $ITCH_USERNAME/$ITCH_PROJECT_NAME:win --userversion-file ./dist/VERSION
      - name: Push Mac Export To Itch
        run: ./butler push ./dist/mac/$EXPORT_NAME.zip $ITCH_USERNAME/$ITCH_PROJECT_NAME:mac --userversion-file ./dist/VERSION
      - name: Push Linux Export To Itch
        run: ./butler push ./dist/linux/$EXPORT_NAME.x86_64 $ITCH_USERNAME/$ITCH_PROJECT_NAME:linux --userversion-file ./dist/VERSION
  # Here we drop a notification in the Discord chat
  AlertPipelineResult:
      needs: [BuildAndPublish, CreateNewGithubRelease, PushExportsToItch]
      if: ${{ always() }}
      env:
        DID_PREV_JOBS_SUCCEED: ${{ contains(needs.BuildAndPublish.result, 'success' ) && contains(needs.CreateNewGithubRelease.result, 'success' ) && contains(needs.PushExportsToItch.result, 'success' ) }}
      runs-on: ubuntu-latest
      steps:
        - name: Read VERSION file
          id: getversion
          run: echo "::set-output name=version::$(cat dist/VERSION)"
        - name: Send Discord Success Message
          if: ${{ env.IS_MAIN && env.DID_PREV_JOBS_SUCCEED == 'true' }}
          # You can change messages below
          run: |
            curl --location --request POST $DISCORD_WEBHOOK \
              --header 'Content-Type: application/json' \
              --data-raw "{\"content\": \"$ITCH_PROJECT_NAME ${{ steps.getversion.outputs.version }} has successfully released and deployed! Check out here - $ITCH_PROJECT_LINK\"}"
        - name: Send Discord Failure Message
          if: ${{ env.IS_MAIN && env.DID_PREV_JOBS_SUCCEED != 'true' }}
          run: |
            curl --location --request POST $DISCORD_WEBHOOK \
              --header 'Content-Type: application/json' \
              --data-raw "{\"content\": \"$ITCH_PROJECT_NAME ${{ steps.getversion.outputs.version }} release and/or deployment has failed!\"}"